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Ok so I removed F7140 and the short is on the system side (pin 2). However, when I measured voltage with on pin 1 with the fuse removed, i got -.18v -- is this because the SMC can't see PPBUS_G3H?

Run ASD 3S155.

pp3v3r3v0_aon, which comes from the ISL, no?

Would that explain why PP3V3_G3H is so low? Also, what signals does the ISL look for in order to turn on the LED?

PPBUS_G3H is 0v, 0.03v drop to ground. Probably short? Don't have a known good here to compare.

PP3V3_G3H is 1.529v. The LED next to the battery connector is dimly lit though.

lol....... 12" retina guys

Still 5v 10 char

F4700 10 char

What is the exact voltage on PPBUS_G3H?

Liquid damaged 820-00045, looks nasty especially around ISL95530 BGA chip. I'm using an original charger with it. The issue is PPDCIN_G3H is only 5v not 14.5v so it's not generating PPBUS_G3H properly I believe. However, it looks like U4780 is the chip that tells the charger to step the voltage...

The 1v8 lcd line is down.

yes 10 char

If that doesn't report anything I fixed one that would shutdown when going to sleep by replacing the trackpad and flex.

Yea I ended up using rEFIT to flash the SMC firmware I got from here: https://support.apple.com/en-us/HT201518 These are the instructions I used: https://discussions.apple.com/thread/6838010?start=0 Works fine now.

I replaced the SMC on an 820-3437 and the board works fine, however it won't boot into the customer's OS. I verified that their drive does boot on another machine. I suspect the issue is that the SMC firmware on the SMC I put on is too new for her OS (Mountain Lion) or maybe vise-versa...

OK thanks, appreciate the info

mid 2014 10 char

It has to go back to Apple because the anti glare is coming off, otherwise I wouldn't bother.

25L6406E... Fail. Thanks.