Author Topic: Rhodes Suitcase Transformer Hum  (Read 687 times)

Offline PPE

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Rhodes Suitcase Transformer Hum
« on: December 09, 2019, 09:07:01 PM »
Hey folks!

First post here.  I recently acquired a late 1979 MK1 Rhodes Suitcase and noticed that the 5-pin amp had an unusual transformer hum that was also audible through the speakers.  The weird thing is that a checked out a-OK at my tech's and was dead silent.  I tested the outlets at my place and noticed that all of them had an "open ground".  Could this be the source of my problem?  If not, do any of you know if these amps are known to have hummy transformers? 

I've attached an audio file for reference.  Make sure to listen with headphones!