file Inrush resistor smokes then Curcuit breaker trips.....

9 years 3 months ago #13136 by MAutopsy
working on a Peavey 2600 right now. When powered up, the inrush resistor smokes then the resettable curcuit breaker blows. Cant seem to figure it out smiley19 . once had this happen on one of my old QSC amps, but never resolved the problem.. Any pointers?

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6 years 11 months ago #20483 by Gwyn davies
Check output transistors.They generally short from collector to emitter. The bridge rectifier may be faulty ,or even the mains transformer. I would disconnect the ht plus and minus voltage from one driver board at a time. If this cures the problem,reconnect the driver/output stage boards one at a time . Once you have isolated the problems fix the faulty channel, or get it repaired if you unable to do it yourself !

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