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#1
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Cracking open a Galaxy Audio PA amp
I inherited a repair job that I can't get started because I can't get
the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#2
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Cracking open a Galaxy Audio PA amp
David Nebenzahl wrote in
.com: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? I have noticed that sometimes there is a screw (or more than one) under one (or more) stick-on label(s). -- "Anytime I hear the word "culture", I get on the Internet." - a 21st Century Moron |
#3
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
"David Nebenzahl" wrote in message .com... I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) Specifically, No....But I have sometimes found that they like to hide screws underneath the pasted on rubber feet, so you might investigate that. Also, inspect the cover carefully to see exactly which panels are welded to what other panels, and you might get a clue as to where the screws have to be in order for it to come apart...... |
#4
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 9/12/2010 11:17 PM Bill Graham spake thus:
"David Nebenzahl" wrote in message .com... I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? Specifically, No....But I have sometimes found that they like to hide screws underneath the pasted on rubber feet, so you might investigate that. Nope, no feet on the bottom. Also, inspect the cover carefully to see exactly which panels are welded to what other panels, and you might get a clue as to where the screws have to be in order for it to come apart...... Nothing's welded to anything. Just a diecast chassis set into a plastic case that surrounds it. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#5
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 9/12/2010 10:47 PM thanatoid spake thus:
David Nebenzahl wrote in .com: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? I have noticed that sometimes there is a screw (or more than one) under one (or more) stick-on label(s). Good idea, but no screws lurking underneath labels here. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#6
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
"David Nebenzahl" wrote in message .com... I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? -- Try emailing Galaxy and asking them ? They can only say no ... Head up your email "Urgent - Please Pass to Service Department" You might strike lucky and get a secretary that prints it out and passes it on without 'filtering' it. In my experience, most engineers don't mind helping others, and unless the company has a really strict 'no help' policy, quite often if you can get as far as direct communication with an engineer, you can get the information you need. Arfa |
#7
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 13/09/2010 08:32, David Nebenzahl wrote:
Nothing's welded to anything. Just a diecast chassis set into a plastic case that surrounds it. Do the control knobs on the front come off to reveal spindle nuts? -- Adrian C |
#8
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
Hi!
Fine idea, and was my next tactic. As you say, what have I got to lose? It'll be interesting to see what kind of response I'll get. I've had good luck with this approach in the past. It will be interesting. Please do post back with their response. Looking at the unit, I wondered if perhaps the cabinet was snapped together internally at assembly time. I saw what to me looked like a seam line, but the photos weren't really high resolution enough to tell. If that's true, it may mean that opening the unit will mar the finish or break some/all of the things holding it together. William |
#9
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
"William R. Walsh" wrote in message ... Hi! Fine idea, and was my next tactic. As you say, what have I got to lose? It'll be interesting to see what kind of response I'll get. I've had good luck with this approach in the past. It will be interesting. Please do post back with their response. Looking at the unit, I wondered if perhaps the cabinet was snapped together internally at assembly time. I saw what to me looked like a seam line, but the photos weren't really high resolution enough to tell. If that's true, it may mean that opening the unit will mar the finish or break some/all of the things holding it together. William Try fitting a piece of paper through the crack to see if it really is a separate piece of metal.....Reminds me of the wooden beams that "hold up" my living room ceiling.....Until I was able to put a sheet of paper between the wall and the end of the beam.....turns out that its the other way around....The ceiling is holding up the beams....:^) |
#10
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On Sep 14, 5:03*pm, "Bill Graham" wrote:
"William R. Walsh" wrote in ... Hi! Fine idea, and was my next tactic. As you say, what have I got to lose? It'll be interesting to see what kind of response I'll get. I've had good luck with this approach in the past. It will be interesting. Please do post back with their response. Looking at the unit, I wondered if perhaps the cabinet was snapped together internally at assembly time. I saw what to me looked like a seam line, but the photos weren't really high resolution enough to tell. If that's true, it may mean that opening the unit will mar the finish or break some/all of the things holding it together. William *Try fitting a piece of paper through the crack to see if it really is a separate piece of metal.....Reminds me of the wooden beams that "hold up" my living room ceiling.....Until I was able to put a sheet of paper between the wall and the end of the beam.....turns out that its the other way around....The ceiling is holding up the beams....:^)- Hide quoted text - - Show quoted text - Try dropping it if you don't hear from the manufacturer. |
#11
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) -- Politicians should only get paid if the budget is balanced, and there is enough left over to pay them. |
#12
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
David Nebenzahl wrote in
.com: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp You or someone you know has a digital camera. Take a photo of the ****ing thing, all sides, and post it to a binary group of your choice or to some stupid site like photobucket or flickr. It's will considerably improve your chances of opening the thing. I for one would like to see what the hell we are talking about. "Similar to this one" does NOT cut it. -- "Anytime I hear the word "culture", I reach for my iPad." - 21st Century Humanoid |
#13
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
Michael A. Terrell wrote in message
m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) -- Politicians should only get paid if the budget is balanced, and there is enough left over to pay them. A ring cutter yes, as a last resort, to make an inspection hole. Somewhere there is unlikely to be active stuff and where a blanking plate could be fixed over the hole and maybe another hole if the first reveals nothing useful. Where an "endoscope" would be useful. I'm assuming you've run a piece of rounded off dowel over any decals for covered screwpoint recesses. |
#14
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
"Michael A. Terrell" wrote in message m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y :-) Arfa |
#15
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
Arfa Daily wrote in message
... "Michael A. Terrell" wrote in message m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y :-) Arfa When you loose neg bias on audio output bottles and a hole is burnt through the anode plate and up to the point the the glass melts and vacuum is lost , is that plasma cutting? |
#16
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
"Michael A. Terrell" wrote in
message m David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plasma Cutter! ;-) IME diamond saws are a more readily available and economical alternative. This is one of the major changes in tooling of this millennium - industrial diamonds are now so inexpensive that tools that effectively employ them are readily available in most big-box home improvement stores. That all said, this product seems to be composed of materials that are too soft and too temperature sensitive for effective cutting by diamond-tipped tools or plasma cutters. |
#17
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
This product appears to be the pro-audio equivalent of most remote controls.
I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near-unreleasable tabs. I've never understood why both are needed. |
#18
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 9/15/2010 9:52 AM William Sommerwerck spake thus:
This product appears to be the pro-audio equivalent of most remote controls. I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near-unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. There's a diecast metal front panel which covers the entire front of the unit, with a deeply set grille for the speaker. Six screws attach the metal panel to the plastic cabinet. The plastic cabinet is ONE PIECE, totally seamless, covering the remaining 5 sides. So it's not a clamshell like most remotes or similarly packaged electronics. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#19
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
I'm sure most people in this group have noticed how remote
controls are generally held together with screws /and/ near- unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. My point was about the /philosophy/ of the packaging. Why belts+suspenders, when only one is needed? |
#20
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 9/15/2010 10:33 AM William Sommerwerck spake thus:
I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near- unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. My point was about the /philosophy/ of the packaging. Why belts+suspenders, when only one is needed? Ah, so. Actually describes my problem here quite well; why doesn't this damn thing open up when I remove the screws, which seemed to hold the thing together quite securely? -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#21
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
In article , David Nebenzahl wrote:
I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? I would like to see a pic of the rear which i can't find. I often have to uncover hidden screws in things. I also have to do alot of prying on things. greg |
#22
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
On 9/13/2010 12:32 AM, David Nebenzahl wrote:
I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? I have a Core PA5X140 hot spot sitting in front of me. single 5" speaker with amp built in. It really did not want to open either. It has 6 screws on the front. a screw on the back. On this unit, there are 1/4" phone jacks on the rear. These are connected to the internal circuit board. SO, the lock nuts MUST be taken off the phone jacks before you start the removal process. On this one, the front face is inset down into the rear shell. My guess is stictation or such is a factor. First on this unit, i gently pried around the deal with a razer blade. Then i used a very small flat blade screw driver to try to break loose the case from the front. Then i kind of beat on it to see if gravity would help it separate (face down). I eventually got it apart, but it did not want to easily separate. bob |
#23
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
Arfa Daily wrote: "Michael A. Terrell" wrote in message m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y :-) Angle grinders are for amateurs and wimps. It takes a real prow to cut something open with a plasma cutter and still have anything left to repair. -- Politicians should only get paid if the budget is balanced, and there is enough left over to pay them. |
#24
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Cracking open a Galaxy Audio PA amp
Dick Pierce wrote: Does anyone have any idea how to open up this unit? At least no one has suggested a Plasma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y diamond saws endoscopes ring cutters drop it tap it with a screwdriver handle unscrew it screw it Explosives. Now THAT'S the ticket! Primacord. -- Politicians should only get paid if the budget is balanced, and there is enough left over to pay them. |
#25
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
Arny Krueger wrote: "Michael A. Terrell" wrote in message m David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plasma Cutter! ;-) IME diamond saws are a more readily available and economical alternative. This is one of the major changes in tooling of this millennium - industrial diamonds are now so inexpensive that tools that effectively employ them are readily available in most big-box home improvement stores. That all said, this product seems to be composed of materials that are too soft and too temperature sensitive for effective cutting by diamond-tipped tools or plasma cutters. A diamond saw? Save that to remodel your bathroom. -- Politicians should only get paid if the budget is balanced, and there is enough left over to pay them. |
#26
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Cracking open a Galaxy Audio PA amp
"William Sommerwerck" wrote in
: I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near- unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. My point was about the /philosophy/ of the packaging. Why belts+suspenders, when only one is needed? Because an average remote gets dropped at least a few times a week (my statistics), and is occasionally thrown at various inanimate objects and assorted life forms. -- "Anytime I hear the word "culture", I reach for my iPad." - 21st Century Humanoid |
#27
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Cracking open a Galaxy Audio PA amp
"thanatoid"
What a handle -- "the form of death". |
#28
Posted to sci.electronics.repair,rec.audio.tech
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Cracking open a Galaxy Audio PA amp
David Nebenzahl wrote:
On 9/15/2010 9:52 AM William Sommerwerck spake thus: This product appears to be the pro-audio equivalent of most remote controls. I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near-unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. There's a diecast metal front panel which covers the entire front of the unit, with a deeply set grille for the speaker. Six screws attach the metal panel to the plastic cabinet. The plastic cabinet is ONE PIECE, totally seamless, covering the remaining 5 sides. So it's not a clamshell like most remotes or similarly packaged electronics. it most likely has a sealant between the front and plastic case to prevent vibration at the seem, which is common with that type of construction.. These things will stick like mild glue.. With the screws half way, wrap the unit in a soft wrap of some kind like foam rubber so you don't scratch it, rest it on a pillow and use something like a piece of wood to hit lightly against the screws that are half way out.. The shock should push on the plastic behind and break the bond!. |
#29
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Cracking open a Galaxy Audio PA amp
"Jamie" t wrote in message ... David Nebenzahl wrote: On 9/15/2010 9:52 AM William Sommerwerck spake thus: This product appears to be the pro-audio equivalent of most remote controls. I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near-unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. There's a diecast metal front panel which covers the entire front of the unit, with a deeply set grille for the speaker. Six screws attach the metal panel to the plastic cabinet. The plastic cabinet is ONE PIECE, totally seamless, covering the remaining 5 sides. So it's not a clamshell like most remotes or similarly packaged electronics. it most likely has a sealant between the front and plastic case to prevent vibration at the seem, which is common with that type of construction.. These things will stick like mild glue.. With the screws half way, wrap the unit in a soft wrap of some kind like foam rubber so you don't scratch it, rest it on a pillow and use something like a piece of wood to hit lightly against the screws that are half way out.. The shock should push on the plastic behind and break the bond!. Ha! I was just about to come in with exactly the same observation, and you beat me to it ! Quite a few of these powered speakers follow that general style of construction, and it's common for something like the self adhesive draught excluder foam strip that you fit around door and window frames, to be used to form an airtight seal between the ally casting and the heavy plastic case. It's not uncommon for this stuff to stick like a bitch when it's been clamped up in that joint for a few years. If there genuinely is just the six screws holding the front to the case, then likely as not, the answer is just going to be brute force. Is there even the tiniest gap that you could perhaps get something like a wide wood chisel into to see if you can spring the plastic away from the metal a little ? Arfa |
#30
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Cracking open a Galaxy Audio PA amp
"William Sommerwerck" wrote in
: "thanatoid" What a handle -- "the form of death". Wow, I certainly DO appreciate you explaining it to me! Sigh. -- "Anytime I hear the word "culture", I reach for my iPad." - 21st Century Humanoid |
#31
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Cracking open a Galaxy Audio PA amp
"Michael A. Terrell" wrote in message ... Arfa Daily wrote: "Michael A. Terrell" wrote in message m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y :-) Angle grinders are for amateurs and wimps. It takes a real prow to cut something open with a plasma cutter and still have anything left to repair. It's a standing joke on that group Michael. "Angle grinder" is the 'silly' answer when anyone asks for instance how to dismantle a ceramic cartridge shower valve to clean it, or anything referring to a 'delicate' job. British humour, and all that ... :-) Arfa |
#32
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Cracking open a Galaxy Audio PA amp
"Michael A. Terrell" wrote in message ... Arfa Daily wrote: "Michael A. Terrell" wrote in message m... David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? At least no one has suggested a Plsma Cutter! ;-) Nah! "Angle grinder" as they always say over on uk.d-i-y :-) Angle grinders are for amateurs and wimps. It takes a real prow to cut something open with a plasma cutter and still have anything left to repair. It's a standing joke on that group Michael. "Angle grinder" is the 'silly' answer when anyone asks for instance how to dismantle a ceramic cartridge shower valve to clean it, or anything referring to a 'delicate' job. British humour, and all that ... :-) Arfa |
#33
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Cracking open a Galaxy Audio PA amp
"thanatoid"
What a handle -- "the form of death". Wow, I certainly DO appreciate you explaining it to me! Sigh. I wasn't explaining it... I was acknowledging it. Clever. |
#34
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Cracking open a Galaxy Audio PA amp
On 9/15/2010 12:51 PM bob u spake thus:
On 9/13/2010 12:32 AM, David Nebenzahl wrote: I inherited a repair job that I can't get started because I can't get the damn amp open. It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little unit, with a die-cast metal chassis set into a thick rugged plastic (polypropylene?) case, that can sit on top of a mike stand. Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of the chassis has 6 screws into the case, and there's one on the back I removed, but I still can't get the chassis out of the case. I tried prying the case, thinking there might be some cast-in lugs I could open, but no luck, and I didn't want to risk chewing up the edge of the case. Does anyone have any idea how to open up this unit? I have a Core PA5X140 hot spot sitting in front of me. single 5" speaker with amp built in. It really did not want to open either. It has 6 screws on the front. a screw on the back. On this unit, there are 1/4" phone jacks on the rear. These are connected to the internal circuit board. SO, the lock nuts MUST be taken off the phone jacks before you start the removal process. On this one, the front face is inset down into the rear shell. My guess is stictation or such is a factor. First on this unit, i gently pried around the deal with a razer blade. Then i used a very small flat blade screw driver to try to break loose the case from the front. Then i kind of beat on it to see if gravity would help it separate (face down). I eventually got it apart, but it did not want to easily separate. Thanks for the first and only really helpful reply in this whole damn thread. You, sir, are a gentleman and a scholar. Sure enough, removing the nut from the phone jack allowed the whole unit to slip rather easily out of the case (I used a heavy knife blade betwixt the case and chassis to start it). The amp appears to be fine; there's either a problem with the XLR mike input jack, or with the mike cable we were using. (Can't test because I have no XLR plugs.) Thanks again. -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#35
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Cracking open a Galaxy Audio PA amp
In article ,
David Nebenzahl wrote: Sure enough, removing the nut from the phone jack allowed the whole unit to slip rather easily out of the case Sheesh. You "shoulda" known enough to do that, at least. Good grief. |
#36
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Cracking open a Galaxy Audio PA amp
Arfa Daily wrote in message
... "Jamie" t wrote in message ... David Nebenzahl wrote: On 9/15/2010 9:52 AM William Sommerwerck spake thus: This product appears to be the pro-audio equivalent of most remote controls. I'm sure most people in this group have noticed how remote controls are generally held together with screws /and/ near-unreleasable tabs. I've never understood why both are needed. No, it's not, and you're misunderstanding the packaging here. There's a diecast metal front panel which covers the entire front of the unit, with a deeply set grille for the speaker. Six screws attach the metal panel to the plastic cabinet. The plastic cabinet is ONE PIECE, totally seamless, covering the remaining 5 sides. So it's not a clamshell like most remotes or similarly packaged electronics. it most likely has a sealant between the front and plastic case to prevent vibration at the seem, which is common with that type of construction.. These things will stick like mild glue.. With the screws half way, wrap the unit in a soft wrap of some kind like foam rubber so you don't scratch it, rest it on a pillow and use something like a piece of wood to hit lightly against the screws that are half way out.. The shock should push on the plastic behind and break the bond!. Ha! I was just about to come in with exactly the same observation, and you beat me to it ! Quite a few of these powered speakers follow that general style of construction, and it's common for something like the self adhesive draught excluder foam strip that you fit around door and window frames, to be used to form an airtight seal between the ally casting and the heavy plastic case. It's not uncommon for this stuff to stick like a bitch when it's been clamped up in that joint for a few years. If there genuinely is just the six screws holding the front to the case, then likely as not, the answer is just going to be brute force. Is there even the tiniest gap that you could perhaps get something like a wide wood chisel into to see if you can spring the plastic away from the metal a little ? Arfa The allied problem (Mackie powered speakers particularly) is long lazy thread screws jammed into the plastic close to the point of shearing if undoing them. I made a heated long shaft screwdriver for this, soldering iron heater slid over the shaft. |
#37
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Cracking open a Galaxy Audio PA amp
"Smitty Two" wrote in message news In article , David Nebenzahl wrote: Sure enough, removing the nut from the phone jack allowed the whole unit to slip rather easily out of the case Sheesh. You "shoulda" known enough to do that, at least. Good grief. Hmmm. I agree that is a little fundamental. I thought we were looking at a 'real' puzzle here ... And without an XLR balanced / unbalanced signal source, how can you test properly, without making possibly unfounded guesses about the service condition of the mic or its lead or the socket on this amp. I would have thought that this sort of test would be fundamental before wasting time trying to rip it all apart. It is in my workshop anyway. Arfa |
#38
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Cracking open a Galaxy Audio PA amp
On Wed, 15 Sep 2010 22:35:59 -0700, Smitty Two wrote:
In article , David Nebenzahl wrote: Sure enough, removing the nut from the phone jack allowed the whole unit to slip rather easily out of the case Sheesh. You "shoulda" known enough to do that, at least. Good grief. Yeah no kidding. boggle -- Live Fast, Die Young and Leave a Pretty Corpse |
#39
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Cracking open a Galaxy Audio PA amp
On 9/16/2010 3:30 AM, Arfa Daily wrote:
"Smitty Two" wrote in message news In article , David Nebenzahl wrote: Sure enough, removing the nut from the phone jack allowed the whole unit to slip rather easily out of the case Sheesh. You "shoulda" known enough to do that, at least. Good grief. Its not really self evident that the jack is connected to the PC board. When i took mine apart, i certainly did NOT think it was that way. I eventually figured it out, but it took a while. i assumed it was just a raw jack connected with loose wires to the amplifier. bob |
#40
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Cracking open a Galaxy Audio PA amp
Sure enough, removing the nut from the phone jack
allowed the whole unit to slip rather easily out of the case Sheesh. You "shoulda" known enough to do that, at least. Good grief. Its not really self evident that the jack is connected to the PC board. When I took mine apart, I certainly did NOT think it was that way. I eventually figured it out, but it took a while. I assumed it was just a raw jack connected with loose wires to the amplifier. This sort of assembly is not that uncommon, as it reduces manufacturing costs. It also makes testing the amplifier a bit easier. I've seen expensive equipment that did the same thing, making the device virtually unassembleable. |
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