I have not checked anything on the board yet, just a visual inspection that has revealed a hot resistor (R34) which feeds one of the transistors. It reads 80 ohms, the others in the same bank read 18 ohms. The next question is how to remove the board from the case, it seems they must have a jig to assemble/disassemble this unit. All the transistors are clipped in to a rail on both sides of the board.
update on pcx 1250 current draw when off
Just an update for anyone who has this type of problem in the future.....replaced all of the mosfets for the power supply and the unit functions normally. There were several that were shorted, and since they are in parallel, it was causing voltage to drop on the gate resistors. Thanks for the help !
Just an update for anyone who has this type of problem in the future.....replaced all of the mosfets for the power supply and the unit functions normally. There were several that were shorted, and since they are in parallel, it was causing voltage to drop on the gate resistors. Thanks for the help !
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