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Aiwa XR-MD85 stereo system, transformer producing noise

There is noise coming from the transformer of an Aiwa XR-MD85.
What could be the problem and how can I get rid of it?
lsaac

Comments
david1949
david1949 picture

If the unit  works ok, then it is probably the transformer metal body vibrating and causing the annoying noise. An old trick to get rid of it was to get a hammer and dot punch, remove transformer and give the outside of tx a few taps.

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