Hi! I got this 2017 board that needed a long press in the power button to turn on and the CPU throttled extremely hard. if I do a SMC bypass the laptop works perfectly. tried with disconnected keyboard/camera/DC-in Board etc and still throttles. Fan always stays low not high
I inspected the board and it looked pristine except a little liquid spill around the SMC and had a shorted cap C5125 from U5110 REFOUT
after removing the Cap the laptop no longer needs the long press to turn on but still throttles and fan low rpm.
still haven't replaced the cap. ran ASD EFI and passes everything, installed HWmonitor and checked sensors all show normal temps low.
The only things that look sus are the "PECI SA" sensor jumps from 0 to 42 C don't know if that is normal
and it shows the "CPU Rail" current as 14.43A. that looks High, and "Mainboard S0 Rail" 118W of consumption.
I suspect it's a current sensing issue? would love some insight on where to look next as I'm a total Noob.
I inspected the board and it looked pristine except a little liquid spill around the SMC and had a shorted cap C5125 from U5110 REFOUT
after removing the Cap the laptop no longer needs the long press to turn on but still throttles and fan low rpm.
still haven't replaced the cap. ran ASD EFI and passes everything, installed HWmonitor and checked sensors all show normal temps low.
The only things that look sus are the "PECI SA" sensor jumps from 0 to 42 C don't know if that is normal
and it shows the "CPU Rail" current as 14.43A. that looks High, and "Mainboard S0 Rail" 118W of consumption.
I suspect it's a current sensing issue? would love some insight on where to look next as I'm a total Noob.
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