Question about Pioneer Audio Players & Recorders

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No power on a Pioneer A-77X Amplifier

The switched and unswitched outlets work. The on/off switch is good. The four fuses on the power supply board are good. Haven't noticed any burnt componets. None of the front panel lights are on. No audio. Completely dead.

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  • chuck_hiller Mar 03, 2009

    I have electronics experience and do have a multimeter.

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  • Master
  • 4,234 Answers

The unit is probably in protect mode. Do you have any electronics repair experience? If so, we may be able to work through this. Let me know and we will try a few things. You will need a multi-meter at a minimum.

Dan

Posted on Mar 03, 2009

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.Hi jepenny

The board you are looking at is the standby cct and power switching PCB. It sounds like that is working, so you have probably lost power to the transformer primary or the transformer is open circuit. Check for blown fuses and replace with exact same type and rating.

Be sure to unplug at the wall before touching any internals!!

If you can find no blown fuses, the power transformer may have failed. Good luck, get back to me here is you need any more advice. Thanks for using "FixYa"

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