Acoustic B20 wiring diagram

[music4fun]

HI, I need the schematic for the B20, my husband can fix it if I had this. The fuse keeps blowing, he checked all he could without a diagram. If we unplug the transformer the fuse doesn't blow so it must be something on the circuit board. Hate to throw amp away, but not worth sending in to repair.
thanks a bunch. Any repair ideas would be great.

[justjcarr]

Check your capacitors. The two larger ones on mine went bad. You can tell they're bad if they're bulging on top.

[BassmanPaul]

Very likely the output devices are toast. they'll need to be replaced. the outputs will be obvious unless they are an integrated power amp chip.