TV/VCR/Stereo Troubleshooting/Technics SA-GX303


Graham W wrote at 2013-01-12 03:15:47
I have the same unit and occasionally have the same problem. How I fixed it:  Remove the cover of the amp after DISCONNECTING power. It is held on by 6 philips screws. The two banked volume potentiometers are right side, behind the large volume control.

Now get some spray-type electronic contact cleaner/head cleaner and spray a few shots directly into the volume pot's while rapidly rotating the volume control from low to high - several times. There are small access holes in the pot's that allow this.

This ALWAYS clears up the crackling for me. It lasts about a year or so and then I have to do it again.  This is also an excellent opportunity to blow out any accumulated dust off the power transistors and the cooling fan assembly.  My unit is about 20 or more years old and I have NO desire to replace it. It powers my 42 year old RSC Columbus Series speakers with magnificent sound.

TV/VCR/Stereo Troubleshooting

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