Home |
Search |
Today's Posts |
#1
|
|||
|
|||
I dug my FM-1 out of the mess..
And when I opened the cover to see about replacments for the filter
caps,I discoveredthat I had already replaced them under the chassis! The main reason was a fairly bad hum.. So I fired it up slowly,on the variac,just to be careful. ;-) Checked it out a bit,seemed good! off to hook it up! Sounds good,but it still hummed..After a while I went over to the tuner and tilted it up on it's side,the hum went away when I flexed the chassis! So,I grabbed a screwdriver and started tightening screws..Hum's gone! Wow,this thing is great! it seems to be aligned fairly well,stations come in where they are supposed to,and the overall sound is quite good. Also,the tuning closes tightly (not quite touching,but close) and the MPX board seems to be working well. (Whoohoo!! Stereo!) So,now I have yet another project.. Any tips before I begin? ;-) I'm going to go through it completely,clean the boards and chassis (and make sure the screws are tight!),and replace any parts that are out of spec,and realign it! What do you guys use to clean PC boards? What would you suggest? The top of the PC boards(along with the chassis)are coated with a layer of "Dusty old crud". Thanks! Keep those screws tight!! Patrick. |
#2
|
|||
|
|||
Behold, Nothing40 scribbled:
What do you guys use to clean PC boards? What would you suggest? The top of the PC boards(along with the chassis)are coated with a layer of "Dusty old crud". Acetone (acetone based nail polish remover works) or isopropyl alcohol (keep it off plastics). -- Gregg *It's probably useful, even if it can't be SPICE'd* |
#3
|
|||
|
|||
Hi RATs!
Yup, iso alky is OK. Get the 90% instead of 70%, it evaporates faster, less collateral damage Happy Ears! Al Alan J. Marcy Phoenix, AZ PWC/mystic/Earhead |
#4
|
|||
|
|||
"Nothing40"
...started tightening screws..Hum's gone! Ahhh...nothing like a tight screw to get the hum going... Like others have said, you can use isopropyl alcool, I prefer Methanol as it evaporates much faster and there is no chance to find oil in it as some rubbing alcool (if you are tempted to use it...). Use a very soft toothbrush to clean "in the corners" if needed. But I still prefer non-aggressive cleaners in cans especially formulated for that purpose. I'm lazy...Always check old plastics and rubber wiring for "adverse reaction"...But I think this has been said already. Ohhh. Let dry at least an hour or more before turning on again... Syl Wow,this thing is great! it seems to be aligned fairly well,stations come in where they are supposed to,and the overall sound is quite good. Also,the tuning closes tightly (not quite touching,but close) and the MPX board seems to be working well. (Whoohoo!! Stereo!) So,now I have yet another project.. Any tips before I begin? ;-) I'm going to go through it completely,clean the boards and chassis (and make sure the screws are tight!),and replace any parts that are out of spec,and realign it! What do you guys use to clean PC boards? What would you suggest? The top of the PC boards(along with the chassis)are coated with a layer of "Dusty old crud". Thanks! Keep those screws tight!! Patrick. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.500 / Virus Database: 298 - Release Date: 2003-07-10 |
#5
|
|||
|
|||
"Syl" wrote in
: "Nothing40" ...started tightening screws..Hum's gone! Ahhh...nothing like a tight screw to get the hum going... Like others have said, you can use isopropyl alcool, I prefer Methanol as it evaporates much faster and there is no chance to find oil in it as some rubbing alcool (if you are tempted to use it...). Use a very soft toothbrush to clean "in the corners" if needed. But I still prefer non-aggressive cleaners in cans especially formulated for that purpose. I'm lazy...Always check old plastics and rubber wiring for "adverse reaction"...But I think this has been said already. Ohhh. Let dry at least an hour or more before turning on again... Syl Wow,this thing is great! it seems to be aligned fairly well,stations come in where they are supposed to,and the overall sound is quite good. Also,the tuning closes tightly (not quite touching,but close) and the MPX board seems to be working well. (Whoohoo!! Stereo!) So,now I have yet another project.. Any tips before I begin? ;-) I'm going to go through it completely,clean the boards and chassis (and make sure the screws are tight!),and replace any parts that are out of spec,and realign it! What do you guys use to clean PC boards? What would you suggest? The top of the PC boards(along with the chassis)are coated with a layer of "Dusty old crud". Thanks! Keep those screws tight!! Patrick. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.500 / Virus Database: 298 - Release Date: 2003-07-10 Flux remover is what I use. Should not take silscreening off or other lettering on the components. For really nasty cases "Goof-Off" works well but is deadly to some plastics, paint, etc. r -- "Any sufficiently advanced technology is indistinguishable from magic." Arthur C. Clarke (1917 - ), "Technology and the Future" |
#6
|
|||
|
|||
|
#8
|
|||
|
|||
Ohh,Also,about the alingment..I can't seem to find the instructions
for the FM-1.I did print out the set for the FM-3.I assume the procedure is the same,except for the mono/stereo switch,which isn't there on the FM-1! I was thinking of adding a switch for this,in place of the AC outlet on the rear. In the mean time,does anyone have the set for the FM-1,and or the MPX board? Thanks again! Patrick --tired. (I think my headache may be from soldering so much..ack..) (Nothing40) wrote in message . com... And when I opened the cover to see about replacments for the filter caps,I discoveredthat I had already replaced them under the chassis! The main reason was a fairly bad hum.. So I fired it up slowly,on the variac,just to be careful. ;-) Checked it out a bit,seemed good! off to hook it up! Sounds good,but it still hummed..After a while I went over to the tuner and tilted it up on it's side,the hum went away when I flexed the chassis! So,I grabbed a screwdriver and started tightening screws..Hum's gone! Wow,this thing is great! it seems to be aligned fairly well,stations come in where they are supposed to,and the overall sound is quite good. Also,the tuning closes tightly (not quite touching,but close) and the MPX board seems to be working well. (Whoohoo!! Stereo!) So,now I have yet another project.. Any tips before I begin? ;-) I'm going to go through it completely,clean the boards and chassis (and make sure the screws are tight!),and replace any parts that are out of spec,and realign it! What do you guys use to clean PC boards? What would you suggest? The top of the PC boards(along with the chassis)are coated with a layer of "Dusty old crud". Thanks! Keep those screws tight!! Patrick. |
#9
|
|||
|
|||
"Nothing40"
Anything I can do to get the layer of residue off,short of unsoldering every component,so I can clean the PC boards?? The stuff I am using a JY8 solvent degreaser. Removes ALL waxy deposits, gunk etc. without any effort, just spray, let sits, spray again lightly. Citrus oils based. Made in Canada. 5 stars stuff. Tuner cleaner, alcools based (Iso, Methyl and another one I forget the name), not as effective as the first one though. Didn't find any home products as good. Syl --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.500 / Virus Database: 298 - Release Date: 2003-07-10 |
#10
|
|||
|
|||
"Syl" wrote in message .. .
"Nothing40" Anything I can do to get the layer of residue off,short of unsoldering every component,so I can clean the PC boards?? The stuff I am using a JY8 solvent degreaser. Removes ALL waxy deposits, gunk etc. without any effort, just spray, let sits, spray again lightly. Citrus oils based. Made in Canada. 5 stars stuff. Where do you get this JY8 solvent degreaser? I looked o the web and could not find it. Can you send some product info to me? Thanks |
#11
|
|||
|
|||
|
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
How to secure a sub enclosure | Car Audio | |||
Putting the Mess in Mesopotamia | Audio Opinions | |||
speaker protection | Car Audio | |||
Discussion - the creation of a new newsgroup for home recording | Pro Audio |