Repairing stuff...: Well, I’ve just finished putting my Zoom G9.2tt guitar effects processor back together after fixing it. That was kind of a long story, really. The Zoom G9.2tt appears to be built like a tank, but since nothing is perfect, it has some weaknesses. In this case it’s the small pushbuttons on the unit. They consist of three parts… There’s this translucent plastic thing that you push with your finger, which is clicked onto the PCB, over the actual microswitch and a led. This plastic thing ‘hinges’, so you can push it down onto the underlying microswitch. There aren’t any actual hinges, it’s just two...