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Onkyo TX-DS939 amp output problem to one of the speaker My Onkyo amp started to send weird cracking noise to one of the speaker some months ago and now it totally stops sending any sound to the same speaker. The speaker works fine with another amp. The speaker on the other side have no such problem. Wonder if you may help on how to fix it, thanks. Rossana

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  • 60 Answers

A bad component in the amp. Could be one of several such as capacitor or transistor. Need to take it to a shop or replace it if too costly.

Posted on Jan 10, 2014

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: desply and sound gos off Onkyo TX-DS939

On my device there were quite a few bad solderings on power card. May be you have the same and it does not tolerate heat. Power card is that horizontal one on top, when you open the box. It is easy to remove so that you see under the card to check those solderings. One screw from left side of case, which holds that noise eliminator on AC lines, six screws from back keeping those connectors and four screws away from board corners. I disconnected only that connector in the middle of card, because it was a bit tight. Then I was able to turn that card upside down and after some fixes to those bad solderings device is like new again.

Posted on Jun 26, 2008

SOURCE: Onkyo TX-DS939

I have to ask the obvoius, did you get the manual, have you used the onscreen menu to set up the speakers, you can calibrate the speaker levels on the TV screen if you use the S video or RCA vidoe connection .have you turned off tape monitor?

Posted on Jun 28, 2008

marsrover
  • 682 Answers

SOURCE: Onkyo TX-SR701 no Digital output sound!!

befor go to any direction please repeat your system setup as manual told you(for digital output setting)

Posted on Apr 09, 2009

  • 4234 Answers

SOURCE: where to send a onkyo sterio to get it fixed

If you don't have a local service shop, then please post your general location here so we can provide guidance. Typically any TV service shop will either service the unit directly or deal with someone that can service audio equipment. We will be happy to provide a reference once your location is known.

Thanks,
Dan

Posted on Dec 14, 2009

  • 1 Answer

SOURCE: onkyo tx-nr807 no sound from speakers no matter

The reset will wipe out all of your settings. If you remove the power momentarily you will probably clear the problem and not have to go through the setup procedures again. This has worked for me on a number of problems with this product.

Posted on May 07, 2010

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1 Answer

Turn on power and the amp goes to protect mode


disconnect the speakers and see if it does the same thing.
if it does not shut down,check that the speaker wires are not touching on the back of the speakers.
many times,people run over the wires with a vacuum or similar and a short results,or bump the speaker.most people have the leads way too long,and even if one strand touches,it will shut down the amp.
if it still shutting off,there is an internal problem.
the best place to go with an onkyo is an authorized depot.
they are tricky to work on.
i did onkyo warranty for 7 years.

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This sounds like the amp is seeing too small an impedence load. In other words, the amp is expecting to see an 8ohm load and is being presented a 4 or 2 ohm load. This will force the amp to work really hard and generate excessive heat. Does the amp generate sound at all? ever? If not, then you probable have a situation with high frequency oscuillations that you can not hear. This means that the amp is sending out a lot of power to the speakers that the crossovers are shunting to ground. Without seeing the output of the amp with a scope, I can not confirm this. This is not a problem that will be solved remotely. Bring the unit to a shop and request that the output be examined using a scope to check the waveforms. I suspect that a bad feedback look internally is causing the generation of the high frequency signals.

Keep us posted.

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1 Answer

Onkyo TX-DS939


I have to ask the obvoius, did you get the manual, have you used the onscreen menu to set up the speakers, you can calibrate the speaker levels on the TV screen if you use the S video or RCA vidoe connection .have you turned off tape monitor?

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