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820-3115 light on charger, no fan spin
- Thread starter ajdoc
- Start date
"PP3V3_SUS - 0V"
PM_SLP_SUS_L missing too?
Post PM_BATLOW_L, S5_PWRGD, PM_DSW_PWRGD, PCH_DSWVRMEN and the 4 RTC signals.
PM_SLP_SUS_L missing too?
Post PM_BATLOW_L, S5_PWRGD, PM_DSW_PWRGD, PCH_DSWVRMEN and the 4 RTC signals.
2click
Member
If you aren´t using a 85watt original adapter you won´t get the PM_BATLOW_L. That happened to me until I changed the PSU cable to a original 85 watt. And I understand that if you don´t have that voltage you wont be able to activate the PCH.
see if this can help you:
www.it-tech.com.au
see if this can help you:
PM SLP S4 L Timing
MacBook power management discussion. PM_SLP_S4_L voltage, PM_PM_SLP_S4_L_missing, PM_SLP_S3_L voltage, PM_RSMRST_L voltage, PPVRTC_G3H voltage
www.it-tech.com.au
"PM_SLP_SUS_L - 3.32V"
Then you MUST have 3V3_SUS too; check that again.
If not present, check for short and post Q7802/20 voltages.
Then you MUST have 3V3_SUS too; check that again.
If not present, check for short and post Q7802/20 voltages.
Mea culpa, I meant Q7820/22...
Do you get at least pulsing PM_BATLOW_L when connect charger?
That is not a confirmation 100%.
You should get higher pulse.
Only an o-scope can catch the real peak pulse.
PM_SUS_EN should go high at same time.
You should get higher pulse.
Only an o-scope can catch the real peak pulse.
PM_SUS_EN should go high at same time.