Hi Patrick,
Yes it looks like a cable ground problem. On the other hand I would think the problem to be intermittent then. But whatever I try (bending the cable and so on) nothing helps. There are slight changes in deviating frequency traject when I open and close the head and fiddle somewhat with the internal leads.
It's tempting to shorten the cable, just in case. So far I even don't know how to remove the strain relief. I can rotate the sleeve but it doesn't come of despite I pulled with considerable force. I also guess that there must be some crimped fit around the (blanked) cable in the metal part of the relief.
Albert
