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I've got an 820-01041-07 on the bench that pulls 4.89v 35mA. Board is immaculate, no liquid anywhere and all indicators are still white. PPBUS is 3.74v, checked for CHGR_EN_MVR and it is missing. Is there anything else to check before suspecting the ISL9240?
Checked those voltages, I get 3.78v on VDDA, 4.68v on VDDP, 4.8v on P_IN, and 1.21v on AUX_DET. Apologies if this is a stupid question, but I've never troubleshooted around this area of the board before, what lines should I check with diode mode and what sort of values am I looking for? I wish I had another working model of this board to compare to.
Will change U7000. Is it safe to assume that most everything on Aliexpress doesn't have firmware and won't work? Otherwise I'll have to pick up a battery case as a donor.
Forgot I had a recycled board with an ISL9240, used that for the swap and I now get 4.95v 0.01a. VDDA and VDDP of the new U7000 are 4.95v, P_IN and AUX_DET are the same.
I just measured again and double checked that I am in diode mode. I'm now getting 0.770 with the red probe as ground, and 0.910 with the black probve as ground.