ca-810

Discussion in 'Yamaha' started by Willy6, Nov 16, 2017.

  1. Willy6

    Willy6 AK Subscriber Subscriber

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    The last time I checked those were reading +44 and -44 I'll see if I can bring that voltage down when I get home.
     
  2. avionic

    avionic " Black Knights " Subscriber

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    Measure the DC voltage on the base of TR802 referenced to chassis ground.
     
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  3. Willy6

    Willy6 AK Subscriber Subscriber

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    Got it -25vdc right on the money.
     
    Last edited: Dec 20, 2017
  4. avionic

    avionic " Black Knights " Subscriber

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    See if you can adjust it to - 13 vdc with VR801.
     
  5. Willy6

    Willy6 AK Subscriber Subscriber

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    I can but the schematic says -25vdc
     
  6. avionic

    avionic " Black Knights " Subscriber

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    Not on the schematic I'm looking at. What schematic are you using ?
     
    Last edited: Dec 20, 2017
  7. Willy6

    Willy6 AK Subscriber Subscriber

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    Download from hifiengine.com
     
  8. Willy6

    Willy6 AK Subscriber Subscriber

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    Ok I see it now with a magnifying glass -13v
     
  9. avionic

    avionic " Black Knights " Subscriber

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    Same one I'm looking at.:biggrin:
     
  10. Willy6

    Willy6 AK Subscriber Subscriber

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    The best I could it to is -12.50vdc
     
  11. Willy6

    Willy6 AK Subscriber Subscriber

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    My eyes just ain't what they used to be.
     
  12. avionic

    avionic " Black Knights " Subscriber

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    Join the club..
     
  13. Willy6

    Willy6 AK Subscriber Subscriber

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    Just found another problem.The meter lights weren't working so I ordered some new ones and now they work but they are producing a hum through the speakers there was no hum before I put the new light bulbs in.
     
  14. Willy6

    Willy6 AK Subscriber Subscriber

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    What would be a good replacement for the regulators D234?
     
  15. avionic

    avionic " Black Knights " Subscriber

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    2SD234 ----
    512-KSD526Y
     
  16. avionic

    avionic " Black Knights " Subscriber

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    Look around for a possible broken black wire or a poor ground connection. Look at any boards you may have moved/removed replacing the lamps. Some boards have fasteners that connect the circuit board to chassis ground.And need to be very tight connections.
     
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  17. Willy6

    Willy6 AK Subscriber Subscriber

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    I have some mje15032g do you think those will work?
     
  18. avionic

    avionic " Black Knights " Subscriber

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    Do the D234's test bad ?
     
  19. avionic

    avionic " Black Knights " Subscriber

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    Yes..Way overkill.
     
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  20. Willy6

    Willy6 AK Subscriber Subscriber

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    No but while I'm in here I thought I should replace them because I noticed they got really hot.Give me your opinion should I order the ksd526 and wait two weeks or pop the mje15032s in there since I already have them?
     

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