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Noisy channel of receiver

Hi,

I have an old Technics SA-300 receiver. The right channel has become very noisy and crackly. I have two sets of speakers hooked up to it and both right speakers are the same, so I know it's the channel. I blasted the speaker inputs with contact clean and disconnected the mixer, tape deck, etc. The noise is still there.

Thanks,
Nancy

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  • Nancy Rapchak Apr 09, 2008

    Thanks Nilrem. I did dis assemble tonight. This is not your dust in the volume control thing although it sounds like that. It happens on it's own, even when the volume is down. I switched the left speaker cable into the right inputs and it still is static-y. I have been having problems with the right speaker's input on the back because it is an ancient speaker but the right speaker in the bedroom has the same static. It sounds like a radio that is not set on a station but it's only in the right channels.

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Generally, crackling noises come from anyplace there is a mechancial connection for the sound signal. The volume control, main/remote speaker switch and possibly the headphone jack. That is where the contacts must be cleaned, but it requires dissassembly. Try operating the main/remote speaker switches, and plug/unplug a headphone several times. I am assuming there is still audio behind that crackling. Are you using both main and remote speakers simultaneously?

Posted on Apr 09, 2008

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