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No liquid damage green light turns orange G3h 12.55v, Pp5v and p3v3 all present down to s0. All_sys_pwrgd 0.070 not shorted to gnd What makes all_sys_pwrgd?

Thanks all working

The only machine i have which is the same board is a late 2013 but this machine is a mid 2014. Can I use dump off of that?

No boot lIquid damaged only in U6100 area, pins 5678 were all corroded pulled the chip cleaned pads on board and chip resoldered and replaced R6102 Machine now boots but serial is unavailable in "about this mac" and in ASD, Read info with medusa 2 "Fsys block not found"

Thank you, I'll try be more descriptive next

thats what I saw too but my brd doesnt have a ISNS rail, but fet is connected to 3v3_s0 through R5520 pin 1 and 2

it was with PP3v3_s0..., i traced it back and PP3v3_s0_fet is what becomes pp3v3_s0 no?

replaced U8030 all working now

diode mode same for working board

Liquid damage in U5400 area and above smc, replaced u5400 and u5600 as they had no legs replaced R5499 and R5498 Green light to orange, pp5v are all good but the last 3v3 rail only measures 1.7v and no short to gnd on it. Board is getting a little warm near the thunderbolt port area

Probably was some stuff under cpu or one of the chips after UC all working

ultrasonic and now working. Thank you for your input

reaplaced u7800 rails are now up board is using 20v 0.6a then drop to .3a after 10 seconds and stays there L7210/20 = 0.6v L7370 = 0.8v L7410/20/30 = 0v cpu is getting warm

sorry C7838

C738 is measuring low, removed cap and tested same result. Replace U7800?

as U7100 is not outputting GTVR_FCCM do you thing replacing it would be an option?

No signs of liquid anywhere near cpu, PMIC_SHUTDOWN_L = 0v PP3V3_LDO3V = 0v

Board smells of shampoo but cant actually see any corrosion, charger was reading 5v replaced u7000 now reading 20v but 0.03a. PP5v_s5/4 = 0v PP3v3_s5 =0v G3H = 13v

No blinking on thumbdrive, GTVR_FCCM is reading 0v is this normal? Usb-c amp meter just came in and its reading 19.7v 0.55a when on is this normal?

Cant see any liquid evidence on the top of the board, how can I check for usb activity?