Re: Diagnose PS BN44-0467A
According to the schematic QM851 (the large TO220 mosfet) drives B13V, not B5V. Also tracing the mosfet's Source pin on the real board I get into pins 1-3-5-7 on CN802 which corresponds to B13V
Im doing all these test with all wires connected to PS (PS to MAIN and PS to BL)
Resistance on mosfet legs while OFF the board:
G to D: 14 Ohm
D to S: 11 Ohm
G to S: 4 Ohm
How does removing a mosfet that's almost a shortcut not affect the BL status?
According to the schematic QM851 (the large TO220 mosfet) drives B13V, not B5V. Also tracing the mosfet's Source pin on the real board I get into pins 1-3-5-7 on CN802 which corresponds to B13V
Im doing all these test with all wires connected to PS (PS to MAIN and PS to BL)
Resistance on mosfet legs while OFF the board:
G to D: 14 Ohm
D to S: 11 Ohm
G to S: 4 Ohm
How does removing a mosfet that's almost a shortcut not affect the BL status?
Comment