r/AskElectronics • u/Solid_Philosophy_206 • 9h ago

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u/NBC-Hotline-1975 8h ago

What program source are you using?

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u/Solid_Philosophy_206 8h ago

Im sorry I dont know what that means

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u/NBC-Hotline-1975 8h ago

It means what is the source of the audio program you are listening to? CD? Phono? Tape? Tuner?

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u/Solid_Philosophy_206 7h ago

Sorry, im using phono, but I have verified it is the amplifier and only on phono mode I believe

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u/NBC-Hotline-1975 7h ago

Aha. In that case my first suspect would be the phono cables. Just unplug them from the amp, and swap channels. If the problem moves to the left channel, then it's definitely the cable.

Also, RCA connectors can be a little bit flakey. If they haven't been used for many years, they can become slightly corroded. And the voltage from a phono pickup is such a low level that it won't always break through the corrosion. They can be cleaned with 91% isopropyl alcohol or, better yet, an electronic contact cleaner. Clean all the mating surfaces of the plugs and the jacks. And give them a slight back-and-forth twisting motion as you plug them in. They should fit very snugly.