B
boardjunkie
I have a Biamp 2442 board that has a hum in the aux/mon/echo returns.
Doesn't appear to be in the pwr supply, all rails show negligible
ripple. When monitoring thru the headphone out w/no signal in a hum is
present when these return pots are turned up when each bus is solo'd.
Found a few 10u BP coupling caps that needed replacing, but the hum is
still there. Must be an op amp that is common to all 3 busses. I don't
have the schemo as of yet but the way its going I will have to track
one down. Anyone seen this prob on one of these?
Thanks
Travis
Doesn't appear to be in the pwr supply, all rails show negligible
ripple. When monitoring thru the headphone out w/no signal in a hum is
present when these return pots are turned up when each bus is solo'd.
Found a few 10u BP coupling caps that needed replacing, but the hum is
still there. Must be an op amp that is common to all 3 busses. I don't
have the schemo as of yet but the way its going I will have to track
one down. Anyone seen this prob on one of these?
Thanks
Travis
