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RE: 500c buzzing power transformer

Posted by floydandrews (A) on March 29, 2014 at 17:17:09

In Reply to: RE: 500c buzzing power transformer posted by Michael Samra on March 29, 2014 at 14:56:47:

Thanks for weighing in. The transformer looks like it belongs. No extra mounting holes in the chassis.I removed all the tubes and disconnected the voltage doubler rectifiers before the first time that I plugged it in. Didn't want a bad cap to spoil the whole thing. Since I posted the original query I have put a bolt through one end of the end bells and tightened it down. Still vibrating like it wants to take off. Next step is to disconnect all the secondaries right at the transformer and check the current draw. Currently the tubes are out, the B+ rectifier is disconnected, but the filament wiring is still connected and the rebuilt (new rectifier and caps) bias supply is connected.

Edits: 03/29/14

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