Hi,
power supply had a shorted Mosfet ,drain resistor(0.47ohm) open circuit,and secondary diode MBR3100 shorted.Replaced all items,still no +12 volt output,340volt dc ok on primary side,replacement Mosfet appears not to be shorted again. I can't find a circuit on the internet,just device application notes.The mosfet driver is a SMD NCP1271-D.Before I replace it any help would be greatfully received-thank you
power supply had a shorted Mosfet ,drain resistor(0.47ohm) open circuit,and secondary diode MBR3100 shorted.Replaced all items,still no +12 volt output,340volt dc ok on primary side,replacement Mosfet appears not to be shorted again. I can't find a circuit on the internet,just device application notes.The mosfet driver is a SMD NCP1271-D.Before I replace it any help would be greatfully received-thank you
