Question about JVC RX-8000V Receiver

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I have a JVC RX-903V. Just got my cerwin vegas re-foamed and was testing them out (very loudly). All was going well......then all of a sudden it went to a very muffled muted bass type sound. Now I get no sound for FM radio or anything else for that matter. did I put too much power through such and old recvr and blow something?

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Perhaps you blew the tweeters and the amp is in protection mode or blown, too. Test tones dead, too?

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


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; 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 and competent hands-on tech.

Posted on Apr 04, 2011

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