Amp/Preamp Asylum: Technics su-g50 amplifier troubleshooting. by Jasonh

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Technics su-g50 amplifier troubleshooting.

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Jasonh

I found a Panasonic Technics SU-G50 amplifier at the curb and decided to take it home. The speaker outputs don't appear to be working. I connected a cd player (first to the cd input, then I tried a tuner input) and got the same symptoms on both inputs through headphones. It sounds like the channels are out of phase. When the balance is dead centre the left and right channels are completely phase cancelled. When the balance is turned to one side that side can be heard clearly in the headphones. I opened it up and took a look and everything looks clean on the inside. I'm going to try cleaning the pots and see where that gets me.

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Topic - Technics su-g50 amplifier troubleshooting. - Jasonh 12:37:41 05/13/10 ( 0)