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I have a Sony STR-AV770 Amplilfier. The left channel does not work at low volume but begnis working when I turn it up. Any suggestions?

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Hello

The amplifier may have been panned to the right,this will make sound produced by the speaker to sound mostly on the right and you will hear little or no sound on the left.Turn the panning knob to the middle,this will make the volume of sound coming from both left and right equal.

Sony amps have a protection mode that can trigger these. Turn the volume down; never set the amp's volume control to the maximum anyway as it can damage the amp. Turn off the surround sound if both the A and B speakers are powered at the same time; check that the speaker wiring is intact. Turn off the amp, wait awhile and turn it back on again.

Posted on Oct 11, 2010

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I have a Sony STR-AV770 receiver that has stopped its output of volume to the left side. Any chance of me fixing this on my own?


your question depends on how good you are at electronic diagnosis (symptom diagnosis) and how adept you are at removing and installing electronc components. first you have to determine why the amplifier has stopped working on the left channel. Make sure that the problem isn't a simple one, take the speakers off the right side and hook them to the left side and see if you get sound. If you do,, then the problem is the left speaker or left speaker wire. If you don't get sound then tyr taking the input that feeds the right channel and pluggin it into the left channel and listen for sound, if you get sound now the problem was the signal from your source not being sent down the left side.
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I don't know what more I can tell you at this point. If you go through the steps I outlined, and want to tell me the result I shall be glad to respond and maybe give you another direction to head in. good luck and I'm glad you are adventruous enough to want to try.

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