thefamilybassman

[quote name='bbrich' timestamp='1372697112' post='2128748'] Take note all of you out there with ageing TE's. Update. It turns out that a transistor that controls the current flow from the power supply to the Pre-Amp is starting to boil its bum after an hour or so of playing. The hotter it gets, the less current it allows through resulting in reduced volume and reduced tone control and eventually cutting out altogether. Could this be my (and your) problem solved? Watch this space. [/quote] Amazing, now 22 years old, I installed a new 300w MOSFET power stage and power supply into my (once 80w) series 6 GP7. Following that, I had this exact problem, didn't replace the transistor but attached 2 flanking bits of copper to act as heat sinks and viola, beautiful, rich, deep sounds returning, sounded stonking at a rehearsal last night and kicked it for a solid 3 hours! Many thanks for this worthwhile tip!