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Yamaha RX-V470 Receiver Shuts Off

This receiver powers up and then shuts off within 2 seconds. The outputs are all good and there is no DC present in the output stage. The bias on the base of the power relay driver is being removed by the micro and I dont know why. The protection circuit does not appear to be activated in any way. The speaker protect relay does not have a chance to engage because the amp does not stay powered long enough.
Any assistance with this would be greatly appreciated.

Thank you,

Joe Weibel

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  • 3 more comments 
  • boxster Mar 02, 2008

    I have the same problem. Sometimes the power will stay on up to 45 seconds, but most times it powers off almost immediately.

  • Greg Famularo Mar 23, 2008

    I have a RX-496 with the exact same problem. Anyone with ideas to resolve, please pass on.

  • jegp2 Aug 03, 2008

    I have the Yamaha RX V470 it will power up and then shut off .....I know there is nothing really deeply wrong because if i sit there for 45 minutes turning it on and then off in a random order of trying to turn it off before it actually turns itself off and then try it again and again eventually it will stay on and work properly forever until I turn it off again and then the process starts over next time i use it

  • TREVORDV Nov 24, 2008

    Same problem with the yamaha RX -657.Shuts off after two-three seconds.

    Have it for four years now and never had a problem until yesterday.

    HELP PLEASE !!!

  • kewyman Jan 13, 2009

    Same issue.. just started this week with my rx-v470. Happens with and without anything hooked up to it. Turn it on and it powers off within 2-3 seconds.

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This unit is in the protection mode. See the link below. If you have further questions, please post them here.

Thanks,
Dan

Link: http://www.fixya.com/support/r5390728-protector_means

Posted on Aug 19, 2010

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