Question about Yamaha RX-V990 Receiver

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Won't power on

Receiver started not powering on by using the On/Off button but would power on using the remote. Now it won't come on at all. When the switch is pushed, there is a click, the light on the volume button comes on then everything shuts off. This process takes less than 1 second. I took the cover off and it all looks good, no fried componets or loose wires. The clicking seems to be coming from a relay(I think) on a circut board where the power cord comes in. I also checked the fuses. I hoping this is an easy fix. Thanks

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SOURCE: Double clicking sound- no power

The relay contacts are most likely bad in the relay and will most likely happen again. If you know how to solder, take out the relay and look up the numbers on the internet and see what you can find. If not, try to find where the manufactuer is located and call them to see where you can get a new relay. Good Luck

Posted on Mar 28, 2007

  • 729 Answers

SOURCE: Yamaha RXV-730 6.1 Channel A/V Receiver

the clicking may have been coming from the relay itself, but it doesn't simply mean that the relay is faulty. clicking may also be caused by transformers, indicating that some electronic components have developed SHORT CIRCUIT. try measuring resistance of transistors and diodes near the power unit (unplug/turn the unit OFF of course) check also for the impedance of the output power transformers.
check the amplifier IC for short also.

Posted on Feb 29, 2008

  • 1 Answer

SOURCE: Yamaha RX-V630 Doesn't power on!

I have the same problem.

Posted on Sep 04, 2008

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SOURCE: When push the power button, I can hear a relay

When the unit functions correctly, you should hear 2 clicks. The first is the power relay that "starts" the unit. The second is the speaker protection relay that will kick in the speaker connection. If you do not hear the second click, the unit is in protect mode. This means that a problem was detected in the amp section and the unit is prevented from connecting the speakers. This is done to prevent further damage. Typically the output transistors fail and cause this. Expect a parts cost in the $25-$50 range for this repair.


Posted on Sep 30, 2009

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