Question about Marantz Audio Players & Recorders

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Buzz in amplifier power transformer. The amp is a Marantz Model 240. It functions perfectly well, and there's no noise from it in the speakers, but the transformer buzzes whenever the unit is plugged in and powered up. Can it be fixed without having to replace the transformer? If so, how? Thanks in advance.

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All transformers buzz though you cannot hear it normally. The big transformers on power lines like to buzz for all to hear. When a transformer in a stereo amp gets old and deteriorates or gets hot and  expands the coils, melts the coil varnish and epoxy coatings then rattles at 60 times per second.    You can ignore it or change the transformer. There are too many layers of windings to try to stick anything in there.  Disconnecting a transformer results in inductive kickback -that's not money. It's a big, whopping electrical gotcha! Be careful! Good luck, Steve Medley

Posted on Nov 09, 2008

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