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#41
Posted to rec.audio.tech
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Tech: Carver Dolby Pro Sound Reciever HR-895
Arny Krueger wrote:
snip It's very hard to actually fix a broken component over the web. Yeah, the soldering part is particularly difficult.... jak |
#42
Posted to rec.audio.tech
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Tech: Carver Dolby Pro Sound Reciever HR-895
"David Nebenzahl" wrote in message s.com... Even though, as Arnie pointed out, a lot of repairs are 95% diagnosis and 5% actual repair (in other words, easy to fix once you figure out what the problem is), there's no way in hell you're going to diagnose the problem by bugging people here and repeatedly asking "What's wrong with it?". You have to at least get your hands on a schematic. They're out there. What has he said so far that gives you the idea he could read and understand one, let alone use it to figure out what exactly is wrong with his amp? MrT. |
#43
Posted to rec.audio.tech
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Tech: Carver Dolby Pro Sound Reciever HR-895
On 1/20/2009 11:11 PM Mr.T spake thus:
"David Nebenzahl" wrote in message s.com... Even though, as Arnie pointed out, a lot of repairs are 95% diagnosis and 5% actual repair (in other words, easy to fix once you figure out what the problem is), there's no way in hell you're going to diagnose the problem by bugging people here and repeatedly asking "What's wrong with it?". You have to at least get your hands on a schematic. They're out there. What has he said so far that gives you the idea he could read and understand one, let alone use it to figure out what exactly is wrong with his amp? Well, he says he works on pinball machines, which presumably require knowledge of reading schematics, so I'm giving him the benefit of the doubt. -- "I know I will go to hell, because I pardoned Richard Nixon." - Former President Gerald Ford to his golf partners, as related by the late Hunter S. Thompson |
#44
Posted to rec.audio.tech
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Tech: Carver Dolby Pro Sound Reciever HR-895
I work on pinball machines and stereos. I have two pinballs and one upright
arcade. Plus a pile of stereo gear. Some skills are trasferrable and you probably can fix some stereo problems. But this unit is digitally controlled and troubleshooting it will be a chore. First you need a schematic and service manual. The service manual will expain the operation and may even have some troubleshooting guidance. You will need some test gear as well. You will most likely need more than a vom. I'm assuming you have done some web searching to see if this is a common bug in this particular system. It sounds like the initial system reaction is to perform the requested function and then it cycles back so it seems like some possible safety function is being tripped or some other piece of data to complete the operation is failing to be returned. The service manual will probably explain what signals are required to complete each operation. From that you will get some idea of where to start. I'd suspect a safety signal from the output section is putting it into some sort of protection mode. But that's just a wild ass guess without a service manual. Since there are zillions of different units out there you can't expect to find someone in a news group that will have first hand knowledge on servicing this particular unit. There are a number of people in this group that probably could help you but not without a schematic and service manual. wrote in message ... On Jan 20, 7:05 pm, David Nebenzahl wrote: On 1/20/2009 3:00 PM spake thus: Look at thishttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380097152242 I have the same problem. All im asking from you guys is Whats wrong Where in the receiver is it How to fix it. First of all, how the hell is posting a link to an eBay auction of *another* non-working unit (whose owner has no clue why it doesn't work) supposed to help? You apparently haven't been getting the message, that there are lots and lots of things that could be wrong with your receiver--could be a blown chip, transistor, relay, etc., etc.--and that you seem to lack the diagnostic skills to determine what the problem is. Even though, as Arnie pointed out, a lot of repairs are 95% diagnosis and 5% actual repair (in other words, easy to fix once you figure out what the problem is), there's no way in hell you're going to diagnose the problem by bugging people here and repeatedly asking "What's wrong with it?". You have to at least get your hands on a schematic. They're out there. -- "I know I will go to hell, because I pardoned Richard Nixon." - Former President Gerald Ford to his golf partners, as related by the late Hunter S. Thompson I dont know how to diagnose it but I work on pinball machines not stereos. One of you guys from the information i have given should have been able to help...not really. |
#45
Posted to rec.audio.tech
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Carver Dolby Pro Sound Reciever HR-895
Jack,
You are unable to describe your problem in the detail necessary to allow anyone to guess at a cause. You need to find someone who likes playing with electroics. There are usually a few of these in any high school. Ask around until you find one or two. Get them to help you. They'll probably want the schematic. If it's not in the owners manual you'll probably need to buy one. Dave M. |
#47
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Quote:
Hi Tim Where do i find the service manual for Carver HR 895,my system works fine but the tone control i.e. bass,treble does not fuction.Or from where can i download the service manual for Carver HR895 or Marantz SR92. Are these two models the same ,what about voltages and other components. |
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