Fender Champion 300 No Output

[misterc57]

I have a signal on the headphone jack and at pin 10 of the LM3876. No output at pin 3 of LM3876.

LM3876 pin 1 has +27V, pin 4 should have -27V but there is nothing there.

I have -27 VDC at C64 and D27. C64 and D27 have continuity. Neither has continuity to LM3876 pin 4.

Neither C64, D27 or LM3876 pin 4 has continuity to chassis ground.

I cannot get a probe on C49 and have not pulled the board out yet. Suggestions? Would a bad C49 cause this problem?

Thank you!

I am attaching Champion 30 schematic which appears identical.

[g1]

If you have not flipped the board yet, I'd expect pin4 (and maybe others) of the LM3876 needs to be resoldered. If it is good, the layout shows a few wire jumpers in the area, maybe one of them carries the -27V and needs resoldering.

[misterc57]

If you have not flipped the board yet, I'd expect pin4 (and maybe others) of the LM3876 needs to be resoldered. If it is good, the layout shows a few wire jumpers in the area, maybe one of them carries the -27V and needs resoldering.

Spot on. At least half had cold solders. She is working like a "champion" once again!

Thank you