Yamaha CA -800 Circuit Board

Discussion in 'Yamaha' started by Chaulk61, Jan 3, 2018.

  1. Chaulk61

    Chaulk61 New Member

    Messages:
    17
    I am trying to fix a CA - 800. It has a broken rear panel circuit board which I am attempting to repair, but this may be beyond my limited skill set. Other than e-bay, which I am monitoring, is there anywhere where else I can look for a used one to replace it?
    Thanks
     

     

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  2. clinic-audio

    clinic-audio all on YAMAHA untill 1990

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    1,969
    Location:
    France
    Any picture ?
     
  3. Chaulk61

    Chaulk61 New Member

    Messages:
    17
    According to the service manual it is # NA 06503 but it looks more like 06680 written on the board....though it is not very clear.
    FCBAE258-0EA3-45DB-BF98-2DDEBEE047E7.jpeg FCBAE258-0EA3-45DB-BF98-2DDEBEE047E7.jpeg
     
  4. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    1,969
    Location:
    France
    Can you precise what is broken because we can't see anything bad in your picture .....
     
  5. Chaulk61

    Chaulk61 New Member

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    17
    The bottom right corner was completely snapped off. I have glued it back together, and resoldered the broken circuits. I tried it out, and it did fix the “no sound at all “ problem, but unfortunately I did mess something up , as now it blasts distortion when I turn the amp on, even with the volume turned completely down. I have pulled it out again and am going to check all the circuits that I reconnected.
    I still wish to source a good used one, as my repair skills are limited at this stage.
     
  6. mbz

    mbz AK Subscriber Subscriber

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    Using jumper wires, between solder points, to bypass the damaged trackwork may help. Will look ugly a sin but may be an interium solution
     

     

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  7. Chaulk61

    Chaulk61 New Member

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    I ended up doing just that and have got it working. And a distinguished AK member has a replacement board for me as well.
     
    911s55 and avionic like this.

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