JBL 515XT - I replace the Mosfet Q370 and Q371 and it burns again.
Thank you friend, ok I measure it with the plate attached to the ground base of the cabinet or I connect a + -20V source ?.
Friend jomi, I comment that if I measure at this time if I demonstrate the mosfet Q370 and Q371, TP601 and TP603 which are the points to measure + VCC and -VCC is at 0 ohms, that is short. Shouldn't you disassemble the damaged mosfet and check if the voltages + VCC and -VCC are the same?
Friend jomi told him to disassemble the mosfet Q370 and Q371, then I proceeded to mount the card to the heatsink without the mosfet Q370 and Q371, the card turns on and proceeded to perform the following measurements + VDC = 24.31 VDC Y + VCC = 24.33 VDC, of the In the same way I measured the U604 regulators and it measures +15.11 V, U607 measures -15.12V, U605 measures 5.02 VDC and U606 measures 5.04VDC.
Now everything seems fine but because when I place the new mosfet Q370 and Q371, they are placed short, will it be that the silpad generates that they are short?
