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there was liquid on keyboard but none on the board. i can replace the smc if you think thats causing the issue. give me a few days to get a donor board
17/18 and 27/28 are part of the current sensing circuit. If it can't tell how much current the battery(27/28) and the charger(17/18) are using, it turns off the machine.
Those values read normally.
1) Are you getting a green light yet?
2) If you short pins 10 and 11 of U7000, do you get 12v on PPBUS_G3H?
This is all pointing to bad soldering around U7000 so far.
I've replaced the u7000 twice now. Once a while back and once yesterday. I'll check the values and let you know. I've triple checked to make sure soldering is good but still no green light though.
SMC is bad. Reflow to see if that fixes, if not then replace. 12.23v PPBUS_G3H means it is not communicating with the ISL6259. When the SMC is communicating with the ISL6259 PPBUS_G3H will be 12.56v. The SMC is also responsible for the green light, as SYS_ONEWIRE is the data line upon which it talks to the battery.
Reballing the existing bad SMC will not fix it, it is like kicking a dead employee and asking him to work. Get a new SMC, the same way if your employee died you would find a new one..