[TenTec] 255 Power Supply Hum

[Ritzman]

Greetings all:
I just purchased a model 255 PS that is making a terrible racket.  It appears
that the transformer is vibrating creating a very loud the 60 cycle hum (can
feel the vibration through the floor in fact). I've checked all the fittings
in the case/chassis and found no problems. Has anyone else experienced a
problem similar to this or have any suggestions for a cure?  Thanks in
advance!
73,
Steve KB1CHS

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