I have a Fender Cyber Twin (1st edition, dont have serial number to hand) which I purchased 2nd hand from Ebay. Lately it has had a fault which started off as quite intermittent but has got worse. When playing (on any preset, at any volume) after 2-5 minutes it glitches out, emitting a crackling noise (electronic crackle) and the digital display goes haywire, changing the presets, altering the volume, effects etc and then the sound cuts out. Changing the preset or even altering the effect using the rotary knob fixes it instantly, but then after a few seconds it starts again. Its incredibly frustrating as it limits me to 2 minute bursts of playing and is effectively stopping me from using it for playing live or recording. I have opened it up and inspected the PCBs but I have little-to-no electronics knowledge so I didnt know what I was looking for or should see. Was hoping it would be something simple and obvious. I have a feeling that its something to do with the PCB/module but have no idea where to go next as I cant really afford to have it fixed professionally. I'm so frustrated I just want to sell it and pick up a simple valve amp.. but I cant even sell it in its current state. Can anyone give me any pointers? Thanks, Dan.