Why are the power transistors running hot?
I've recently got a Roland cube 60 Keyboard amplifier.
Basically I've give it a little refurbish and got it working, but I can't find the schematic anywhere at all for the Keyboard version, only the bass or guitar amps.
It's an old one, not one of the new ones.
My power transistors are running hot, I'm just wondering does anyone have any advice or does anyone have a schematic for this thing?
Is this a good question?