I'm having a very specific problem with the G-string piezoelectric pickup on my Variax 500. Much of the time, the signal goes dead; there is no sound coming from it. However, after pressing down on it, for a few seconds to a few minutes the sound will return, but it will then get fuzzy and fade out to nothing again. This started a week or two ago. Is this a grounding issue, a signal wire issue, or something entirely different? And how can it be fixed?
Thanks!