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Ok I have P5V_G3S missing and U3500 needs that in order to work, when I check U7650 I see that P5VG3S_EN_R missing, following that P5VG3S_EN is missing too as well as PMU_PVDDMAIN_EN and that only comes out of PMU, all AWAKE and SLPS2R signals are present, so far this is what I got, would that...

LB700 and L3500 0 to 0.200V depending on port used

R5246 ok J3300 and JB500 are on par with known good board in diode mode Mac only has USB activity in bottom left port (the one used for restoring) the other ports dont have voltage nor activity

Diode read on UPC_I2C_INT_L is on par with know good. Checked for shorts around all CD3217s and all is fine, I have had this board for a while now and I am ready to give up unless you think I should check something else.

Yes 96W charger used. All 4 CD3217 were replaced from same donor board that had 20V Already replaced from donor board U2890 and UB090 UPC_I2C_INT_L is 0V Diode 426 with board alone Just in case I2C_PWR_SDA/SLC 1.8V with correct Diode read Diode and voltages PP3V3_G3H_RTC_X 3.3V 460 Diode...

Sorry for the lack in information, this Mac boots fully with charged battery and I get 20V with battery installed but 0A so it wont charge, board alone takes 5V and 0.280A, T2 revive works all the way to the end but no change. I dont even know where to start, but I just replaced U7000 and same...

Thanks!

All main rails are present PP1V1_S3, PPVCC_CPU_PH1, PPVCC_CPU_PH2 and PPVCC_CPU_PH3 are all shorted to gnd measuring 0 or 1 Ohms

U7100 basic voltages with original 45W adapter and F7140 installed: 1 0 2 15 3 3.9 9 0 12 3.4 13 3.3 14 3.3 15 0 17 3.2 18 3.2 19 5 20 5 27 15 C7125 was replaced and before or after same result. Q7130 was it, thanks a lot!

Clean board, no history. PPBUS 12.3V PP3V3_G3H_RTC_X 3.3V PP3V3_UPC_XB_LDO 3.3V PP3V3_UPC_XB_LDO 1.5V Already replaced all CD3217 and also U2890/UB090 from same board model donor.

3V42_G3H Present U7100 basic voltages with original 45W adapter and F7140 installed: 1 0 2 15 3 3.9 9 0 12 3.4 13 3.3 14 3.3 15 0 17 3.2 18 3.2 19 3.2 20 5 27 15

C7140 voltage after removing F7140 3.2V

Clean board, already replaced Q7180 (2 times), U7000, D7005, Q7010, D7012, C7125 R7005, R7006, R7152, R7151, SMBUS_SDL and SCL are all fine. Testing with original 45W and fake 85W same thing.

Yes, voltage present on donor board, not present on customer board as stated on my previous message.

UPC_I2C_INT_L diode read is same as good board, good board has data and voltage, customer board has none.

Yes they came from same donor board, in fact I put the chips from the customer board onto the donor board and the donor board got 20V after all the chips got installed back, so the chips are okay. Yes all my test are with original 96 and or 140W chargers

Clean board, boots with charged battery and with battery installed I get 20V but no charge without battery I only get 5V and about 0.285A taken. No shorts around any of the CD3217 All CD3217 have the same behavior Already installed know good U2890, UB090, UB700, U3500 and all CD3217 as well...

Thanks the problem was one or more of the components mentioned before AND the fan.

Board had some corrosion around R5117 near the SMC, fixed that but the original problem of the computer restarting still there, I have boiled it down to the fan not working. Already replaced SMC, clean BIOS, Q6060 R6060/61/65 all ok SMC bypass also no fan spin Shorting SMC_FAN_0_CTL to...

Reball SMC same thing, CPU trick did it! Thanks!