Power Issues on VCC_Main
Something pulling VCC_Main voltage down...
Okay, First time replacing PMIC and Tristar on an Ipad Mini.
Symptoms... Worked the night before, put it on charge and next morning dead.
I opened it, put in new charged battery...no change.
Ordered and replaced with new PMIC and no change.
Replaced Tristar, no change
Now... Probing around measuring voltages, PPBAT_VCC is right at 3.9 to 4 and VCC_Main is 3.5.
Took off PMIC and pads read same.
Any suggestions on where to go from here? Q8104?
Is this a good question?