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[SOLVED]820-3437-B green light but no Fan spin
- Thread starter Dewanbd
- Start date
"All power rails present"
Almost all power rails require PP5V_S4RS3 presence; except 3V3 rails...
So you measure something wrong there.
PP5V_S4RS3 comes out from L7520, not from pin2 of U7501!
Almost all power rails require PP5V_S4RS3 presence; except 3V3 rails...
So you measure something wrong there.
PP5V_S4RS3 comes out from L7520, not from pin2 of U7501!
So you don't have all power rails present.
In fact, apart of 3V3_S5, you are missing all secondary voltages, on big coils...
Post values for PM_SLP_SUS_L, SMC_ADAPTER_EN, PM_BATLOW_L and all PCH's RTC signals.
In fact, apart of 3V3_S5, you are missing all secondary voltages, on big coils...
Post values for PM_SLP_SUS_L, SMC_ADAPTER_EN, PM_BATLOW_L and all PCH's RTC signals.
"PCH_DSWVRMEN=0v"
That is bad.
Measure resistance to ground on that line.
Also check R1450 and PPVRTC_G3H...
That is bad.
Measure resistance to ground on that line.
Also check R1450 and PPVRTC_G3H...
Solder an wire on SMC_ONOFF_L pad and touch the ground with it.
Check if PM_PWRBTN_L drops to 0V at the same moment.
If yes, PM_SLP_S5_L should rise to 0V too; at least check if is any pulse there...
Check if PM_PWRBTN_L drops to 0V at the same moment.
If yes, PM_SLP_S5_L should rise to 0V too; at least check if is any pulse there...