Check PM_BATLOW_L, PCH_DSWVRMEN, PM_DSW_PWRGD, PM_RSMRST_L, SMC_ADAPTER_EN and the 4 PCH's RTC (DC) signals.
Original 60/85W Magsafe 2 charger?
Did you test with lab PSU, or fake charger too?
Original 60/85W Magsafe 2 charger?
Did you test with lab PSU, or fake charger too?