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my understanding is that on this board the PCH is intergrated as part of the CPU/SOC (U0500)?

Double checked all of the PM_SLC_Sx_L, checked with trigger on scope PCH_INTRUDER_L, PCH_INTVRMEN, PCH_SRTCRST_L and RTC_RESET_L are all present.

PM_PWRBTN_L - 3.4v PM_RSMRST_L - 3.31v SMC_ONOFF_L - 3.41v When pulling down SMC_ONOFF_L, PM_PWRBTN_L goes LOW PM_SLP_S0_L - 0v - no pulse PM_SLP_S3_L - 0v - no pulse PM_SLP_S4_L - 0v - no pulse PM_SLP_S5_L - 0v - no pulse

Hello, Yes, I am using orginal apple 85W charger. PP3V3_SUS - 3.34v PM_BATLOW_L - 3.34v PM_DSW_PWRGD - 3.41v PCH_DSWVRMEN - 3.24v Thanks, Jordan

Hello, We have a 820-4924 that won't power on, they have reported water damage, however board generally looks in good condition except a small amount of corrosion arround C8301. MagSafe light is going orange, and i've performed an SMC reset, it goes green then back to orange fine. PPBUS_G3H -...