Question about Yamaha RX-V490 Receiver

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Receiver cuts out after a few minutes

I have a Yamaha I have had for several years. I turn it on and it works for a few minutes then it clicks off and will not come back on. I can run the test and the speakers make noise but there is no sound otherwise.

I like this system and do not want to replace it can you help.

Naomi

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  • Master
  • 8,546 Answers

So are you saying it needs to be playing for awhile before it dies? The Test Tones are brief and appear to work. I'd say you have a heating issue or a component within that malfunctions when its strained.

Generally speaking, an amp protects itself from heat, shorts and overloads.


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.

Posted on Jan 21, 2011

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