Posted: Sat Mar 14, 2020 6:01 pm
My KB-300 just started acting up, very low volume, seems like no volume unless turning up the reverb knobs, then after a short time of attempting to play my keyboard through it, it overheats and shuts down. The back of the panel gets really hot, and I pulled the amp out to look for anything obvious, nothing visably wrong, but some discoloration of metal where the 4 metal devices are mounted, and seems like maybe heat radiating more from one of those 4 more than the others. Appreciate any help. I know how to use an ohm meter and a soldering gun, but otherwise electronically illiterate.