Archive of the former Yahoo!Groups mailing list: The Mellotron Group

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Subject: Re: [newmellotrongroup] Grounding Issue?

From: lsf5275@aol.com
Date: 2012-02-25

I'm guessing that when you switch tracks there is something causing the head block to ground. Check the retainer springs and make sure that they are isolated from the head block channel at the bottom (half-grommet in good shape) and that they do not come in contact with the tape guides. Also check that the head block rollers are properly positioned and in good shape.
 
In a message dated 2/24/2012 3:46:02 P.M. Eastern Standard Time, tron400@yahoo.com writes:
 

#500 has had an intermittant hum for a while now. I thought that maybe it was related to the volume pedal jack, but I noticed yesterday that the volume of the hum changes when I move the track selector. Track C doesn't seem to have any hum, but Tracks A and B do. Any idea what the cause might be?

Bernie