PM_BATLOW_L is correct?
Are you using original 85W Magsafe 2 charger?
Try connecting known good battery.
Are you using original 85W Magsafe 2 charger?
Try connecting known good battery.
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820-3787 no fan spin, no S4 state
- Thread starter ajdoc
- Start date
Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).
Try the board alone on the desk.
Use USB activity tester only.
Inspect the board for more corrosion, close to SMC, PCH and CPU.
Use USB activity tester only.
Inspect the board for more corrosion, close to SMC, PCH and CPU.