Threshold S/550E service info

Zero Cool

Paid Member
2004-09-20 6:10 am
I just got a Threshold S/550E in for service and I'm curious if anyone has worked on these. it powers up ok, no blown fuses, but no audio either, once channel has some very weak half wave that leaks through. doesn't seem to have any bias, there is very little current drawn at full line voltage so I am assuming there is a problem with the bias circuit. I found schematics but not sure they are correct.

P.S.As this is a post N.P product i posted it in the solid state section vs. the pass section.
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