Question about Yamaha HTR-5240 Receiver

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Will not stay on

When I turn on the system it comes on and the turns itself off within a second or two.

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Hello-

I had the identical problem and solved it. It is a short where the speaker wires are contacting each other. Since my problem only happened when a DVD movie was being played, it had to be either the center or back speakers. Checked the center and found both speaker wires touching each other. A little wire shortening and stripping and re-connecting without contact solved the problem.

Everything is working perfectly now.

Good luck.


Barry Scholles
Strasburg, OH

Posted on Dec 30, 2008

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Hello Jerry, This means that the unit is going into protection mode. The unit will only go into protection mode for 2 reasons. The first reason would be if there is a short within the unit itself. The second reason would be if one of the speaker connections is causing a short. To isolate which of the two is the issue, you would first turn the unit off and unplug all of the speakers. Turn the unit back on with no speakers connected and raise the volume up. If the unit turns off with no speakers connected then we know that the issue is internal and would have to go in for repair. If the unit stays on, that will tell us that one or more of the speaker connections was causing the issue. If that is the case I would check all of your speaker connections and possibly start with fresh copper connections. Thanks, FJD

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

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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.


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


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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.


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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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