Fender Stage 160 hum

[plec.22]

Hello to all,

I've had one of these amps on the bench today with the same humm..after looking over the circuit it reminded me of a trace elliott amp. any how after checking the low voltage rails all is good there followed by signal tracing all good till the o/p stage. you got it name that loud hummm. so a main filter caps 3300uf x 2 with 4700uf x 2 and she's back in action.

hope this helps out.

cheers.

[olddawg]

Hello to all,

I've had one of these amps on the bench today with the same humm..after looking over the circuit it reminded me of a trace elliott amp. any how after checking the low voltage rails all is good there followed by signal tracing all good till the o/p stage. you got it name that loud hummm. so a main filter caps 3300uf x 2 with 4700uf x 2 and she's back in action.

hope this helps out.

cheers.

See post #1

[plec.22]

It would seem post one still has faults with the amp. Some more voltages need checking out. Even look over oc tracks as been pointed out. The ht 45v +/- and +/-16 also 5 volts for the fx pcb.