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I've just fixed a Denon amp with the same problem. Replace the mains plug - especially if it a moulded type. Likely that the wires inside the plug have frayed to the extent that there aren't enough strands left to carry the load when the volume is cranked up.

Posted on May 28, 2008

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Surround sound troubleshooting

Try blowing out the receiver with canned air, check the speaker connections,usually the sound dropping out is due to over heating or a bad speaker , the protection circuit kicks in and shuts down the amplifier. Make sure the unit has enough ventilation

Feb 03, 2014 | RCA Audio & Video Receivers

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Sa3 bose not sound from boselink but external input yes

It depends on the Bose system you connected with the amp and the type of Bose remote you are using?Does the indicator LED at the rear of the amplifier stay solid green when you press the ON button on the remote?If not,check that your room code setting on the remote correspond with the micro switches setting at the rear of your amplifier.

Feb 08, 2013 | Bose SA3

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I bought an old PANASONIC STEREO CONTROL AMPLIFIER. Its the kind that has the TUNER AND AMPLIFIER AND CASSET ALL IN one. I am try to hook the amplifier up to my tv monitor so i can increase my sound

Look for AUX input that's what you'll want to connect to on the stereo and some kind of audio output on the monitor. Select AUX on the receiver and adjust your levels. Hope that helps..

Jul 22, 2011 | Audio & Video Receivers

1 Answer

I have a technics se-hd560 when i turn the volume high the sound cuts out. Can u help

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.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Apr 17, 2011 | Audio & Video Receivers

1 Answer

Denon 528 amplifier cuts out after a few minutes

disconnect the speakers and see if amp will stay on. if this the case maybe suspect one of the o/p amps

Feb 08, 2010 | Denon AVR-587

1 Answer

Subwoofer cuts off comes back on cuts out again,,,checked all connections......can only be the amp or the sub

the problem is in subwoofer,amplifier send to subwoofer very,very low signal,and chances for for defect in amplifier are very small.

Oct 12, 2009 | Harman Kardon AVR 120 Receiver

1 Answer

Sound cuts out

No, this sounds like a speaker problem to me.
It sounds like the voice coils in your speaker(s) have been fried.
What happens is the part that is burnt does not funtion, but as you increase the volume/voltage the speaker "jumps" foward to a section of voice coil that is not as damaged.
Check your speakers!

Sep 07, 2009 | Pioneer VSX-816-K/S Receiver

1 Answer

Iv added extra speakers, 2 a small hifi but wen i turn it up the sound cuts out !!!

It is not possible to just add extra speakers. Most likely the total OHM of the speakers is just too much for your amplifier making it go into protection mode. Just disconnect the additional speakers.

Aug 08, 2008 | Audio & Video Receivers

2 Answers

Technics amplifier sound cuts after a few seconds operation

hi there if the sound cuts out after a few seconds and then if you turn it back on again if it does the same you might have a few problems ,,
make sure you are not overloading with to many speakers
make sure all positives are to positive and negatives are to negatives
make sure the unit is not over heating or getting to hot make sure it has room to circulate the hot air
and also check the wiring for any breaks or rips that could be touching each other to make it shutdown
when it cuts out its going into safe mode to prevent further damage one of those will defintly be your problem good luck with it hope this helps

Jul 01, 2008 | Audio & Video Receivers

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