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Technics sa-g78 no sound from front speakers

Hi all, I have a Technics SA-G78 receiver from a friend, but there is no sound from the front right and left speakers. all other speakers and the subwoofer work...any answers as to how to fix this? Is there a fuse I can replace?

Posted by Cornell Menafee on

  • Anonymous Mar 31, 2008

    have same problem, just happened... any known repairs?

  • jag6670 Apr 03, 2009

    I have no sound on the right speaker A or B

    everything else is perfect

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2 Answers

Anonymous

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This happens on mine also. My theory is a relay. If you turn the volume up (Waaay up) momentarily, you "burn through" the oxidation on the relay and the sound comes back - for awhile. Some day, I'll get in there and replace it with something more robust.

Posted on Sep 30, 2008

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Anonymous

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Buy yourself a nice Krell amp!!

Posted on Jun 25, 2009

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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.

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