Question about Yamaha RX-V800 Receiver

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RX-V800 shuts off after 7 seconds turned it on, what should I do?

I'm Electronic Engineer and I have been trying to fix a RX-V800, I replaced two bad transistors Q22A and Q22C(Front right pwr)and drivers. After this action, it didn'n work when pushed its stby/on, now its display keeps light on for 7 seconds approximately then it turns off. Maybe the protection circuitry has been activated. For working properly, does it necessary to connect all the speakrs? How does Protection Circuitry work? By the way, I have RX-V800's electronic diagram. All the best, Rasgador

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  • Rasgador Sep 17, 2007


    Just let you know that I fixed this problem, in fact, I have forgotten to fix ground's screw (G2) or (TP00385), the mainly ground on RX-V800's Board. After did do that, to fix ground's screw on Main board, the RX-V800 worked properly.

    Thanks Anyway.

    All the best,


  • Rasgador Sep 18, 2007

    For you too!!!




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Can you post that diagram here? Or you can email it to me. I can't make any promises, But Im glad to help, I have done much board work in my time, and this one just sounds interesting. L8R

Posted on Sep 17, 2007

  • Patrick McGee
    Patrick McGee Sep 17, 2007

    Good luck again.



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