Hi All,
I have a JVC VN700 which switches off after 12 mins or so of use. On re powering, it trips againg after a few seconds. Sounds like a component faliure but could do with some advice to save lenghthy check.
If anyone has experienced this problem or has any advice, I would be very grateful.
I have checked the amp without speakers and with one chanel only, same problem so I guess the output trans are ok?
I have a JVC VN700 which switches off after 12 mins or so of use. On re powering, it trips againg after a few seconds. Sounds like a component faliure but could do with some advice to save lenghthy check.
If anyone has experienced this problem or has any advice, I would be very grateful.
I have checked the amp without speakers and with one chanel only, same problem so I guess the output trans are ok?
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Service manual here: JVC VN-700 | Owners Manual, Service Manual, Schematics, Free Download | HiFi Engine
Hi,
Thanks for the advice, very much appreciated as I don't have an electronics background just some basic knowledge through messing around with vintage valve amps.
DC voltage measured over 100mv on one chanel so I took out one of the what I think are the preamp boards (TAD809) to test and found the culprit. The other board measures around 38 in both left and right slots.
With my limited knowledge, I will start by changing the caps and move on to resistors. I will have to do some reading on transistors!
Thanks again for your help
Thanks for the advice, very much appreciated as I don't have an electronics background just some basic knowledge through messing around with vintage valve amps.
DC voltage measured over 100mv on one chanel so I took out one of the what I think are the preamp boards (TAD809) to test and found the culprit. The other board measures around 38 in both left and right slots.
With my limited knowledge, I will start by changing the caps and move on to resistors. I will have to do some reading on transistors!
Thanks again for your help
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