Submitted by imre on Sat, 06/05/2010 - 19:23.
Peavey JSX Mini
This amp came to me with a very low output problem from a music store. All the power supply voltages were fine, but the output was low and it seemed like the amp was loaded down because the output transformer was fine. Since the amp was a "Power Soak" feature, I disconnect that to see it it was the issue. It was not. Upon futher disassembling the amp, it was apparent that the output wire from the output transformer was pinched. The power soak PCB was pinching the wire against the chassis. It was probably fine at the factory, but over a period of time and jostling around, it ended up a partial short. A little heat shrink tubing and re-routing the wire fixed things right away.
Then I went on to some mods... read more »