Question about Yamaha R-V703 Receiver

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I have a yamaha R-V703 receiver and it has worked well until today. It was turned up loud and all of a sudden kicked off. Now every time it is turned on and the volume knob is turned it turns the unit off. What could be the problem?

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Make sure the speakers are connected correctly. Something inside overloaded and could have blew a fuse or is in protection mode. Before taking the unit in for servicing or attempting to opening it, I suggest checking that the speaker wires are connected correctly to your receiver in the back. Even one loose strand of speaker wire touching the steel panel will shut your receiver off when the volume is turned up. If that isn't the problem, then try to unplug all the speakers and test it again to confirm that the speakers are not preventing the receiver from functioning properly. Lastly, if no success, wait a while until the unit cools then try again without speakers connected.

Posted on Oct 16, 2010


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In your quest for:

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Running loud on very hot day it stopped working and will not turn on again, power it available at rear outlet when switched on but no activity from rv703

You know the answer.

Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.

Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

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check for a clicking sound of relay after a few seconds from switching on, if missing , the amplifier section needs technical attention. refer service to a qualified engineer.

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No sound

No easy answer given this clue.

Nov 18, 2009 | Yamaha R-V703 Receiver

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