Question about Yamaha R-V701 Receiver

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YAMAHA R-V701 MAKES BUZZING SOUND & WONT TURN ON

RECENTLY A TRANSFORMER IN MY NEIGHBORHOOD BLEW OUT & MY RECEIVER STOPPED WORKING. THE POWER PCB RELAY MAKES A BUZZING SOUND & NO LIGHTS TURN ON. POWER PLUGS ON THE BACK OF THE RECEIVER DONT WORK EITHER. NO FUSES ARE BLOWN & INSIDE LOOKS GOOD. PLEASE HELP!

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  • yamahapaul Sep 06, 2007

    The power wires leading to the transformer have current but only when disconected. The PCB relay still buzzes when powered on and power wires are disconected from transformer.

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This could be the indication of an open resistor, or bad Capacitor in power supply. May not be visible to eye, but if you look in PS. there should be atleast one big sized cap and every PS has a bridge rectifier, this is usually 4 diodes in series, check them and see if any open, shorted

Posted on Sep 06, 2007

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