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Yamaha RX-V750 AV receiver power problem

I have a Yamaha RX-V750 AV receiver about 3-4 years old. A couple of weeks ago turn on after pressing the on off button on the unit or the remote control and eventually did after pressing the buttton on the unit several times. The next time I used it I it would not turn on I turned it off at tghe mains for a minute or so and just left it on until yesterday when I turned it off and now it will not turn on at all.

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I had the same problem, only none of the above worked until someone told be to replace the ceramic cap .022 630v c405 on the sub board, and after this mine has worked fine since

Posted on Feb 23, 2012

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G'day i have had the Same Problem With a Yamaha RX-V750 That i have Repaired...You need to Replace the Three Capacitors On the Sub-Transformer Board...They Hold a Small amount of current to use to turn over the transistors and in turn trip a relay that boots the unit these go dry all the time in these units..replace them and it will work again no prob's
Components As Follows:
2x 2.2 uF 100V (C402) (C403)
1x 1uF 50V (C401)

The relay also could be damaged...or the diode across the Coil you may have to replace these too these faults could have been caused by a surge...or just faulty cheap and nasty components!!

Ben M

Posted on Jul 09, 2009

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Yes I had the same problem with a RX V659 replace the 220nf 630v capacitor on the sub board and problem is solved. Thanks.

Posted on Nov 06, 2012

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