Hi all,

I have a Marshall 5203 Master Reverb 30 combo amp. It stopped working a while ago while we were playing bass through it (bad idea, I know). Now it doesn't turn on at all – no power light, no sound, no nothing. The amp sounds quite nice when working so I would like to get it fixed, but I know little to nothing about electronics.

There is a fuse inside but it is intact. Nothing else seems visibly off, either. I have a multimeter, so I can measure things, but I don't know where to start xP

Photos:






Here is the schematic.

Any help would be very much appreciated! 8|