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Board work very well, but no camera, and automatic brightness on screen/keyboard, manual control work good, connector and cable looks fine
pins of J3502
6: 5V
5: 3,3V
4: 3,3V
3: 0V diode mode : 0,540V cable connected
2: 0V diode mode : 0,540V cable connected
1: GND
L3507 checked
camera...
Board was little liquide damage U5400 area and U3890 area PPBUS_G3H, PP3V42_G3H, PPVRTC_G3H fine. other area very clean
First I have pin 6, 5 of U6100 pulse, tried flash with good rom know 2936-B board (I've backup original rom), voltage after flash was good, after tried with original bios...
Board was liquid damage smc area and spi area,
begin no ppbus i replace smc now i have 12.60V, PP3V42_G3H fine
after PPVRTC_G3H pulse, replace U2600 and cleaning area now 3V stable
now fan spin 1 sec and stop loop
already check spi terminaison,
R7402/03 fine
ALL_SYS_PWGD 0V when fan no...
Begining problem ppbus_g3h 10ohms,
so injected current and find Q7550 bad, replace and now board start up
no chime (just beep when remove memory) already tried memory on another board 820-2915 and work
no display on internal and external monitor cpu heating, vcore present
problem possible...