Question about Technics SA-AX540 Receiver

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Technics SU-G91 Left channel bad

The left channel for A-B has poor sound. I get sound but it is very distorted and not very loud. I have tried soldering the joints on the relay but had no results. I have check the speakers and the signal coming in. The right channel work just fine. I have a Technic Amp model SU-G91. Please help.

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Re: Technics SU-G91 Left channel bad

Man what is iut with Technics and the left channels? I've had 3 amps and all three blow out the left side after a few years.

Posted on Mar 06, 2008

Re: Technics SU-G91 Left channel bad

Did you ever find the solution to the left channel issue? I have the same problem with mine.

Posted on Jan 23, 2008

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I had the same problem. As soon as the volume reached about 24db it would go into overload. I was able to fix it by soldering all the connections on the larger power module. The one connected the the heat sink. When I took it apart there where several solder points that had come loose.

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