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Didn't have to, Duke already did that. Otherwise, sure thing. That's what I feared with the apfs compatibility.

First rom was from ghostlyhaks. It was supposed to have clean ME etc., (didn't check myself to spare time, maybe should've). Tried a rom from the myth himself, Duke. Needless to say, booted up perfectly. My guess is that the old bios chip went bad overtime (although I know it's more usual on...

This particular mouse has always been "right" about usb activity. But FAIAP, tell me more about the other method, I'm a regular reader of this forum but I still didn't find it. Tried searching for it here also. PRAM reset done. Internal LCD stayed black. EDIT: I left the machine on the black...

No liquid hit the board, ever. Chimes, backlight comes on but no video. Mouse lights up after a while but shuts down after a while too. Bios replacement didn't help. Customer said that prior to no video at all it would shut down randomly. No pic to external either obviously. All powers...

I actually wrote, that it doesn't charge with the other battery... And obviously not with the original either. It seems that a battery with juice is powering something to enable 20V for DC-in...

Is SMC_PM_G2_EN needed for charging the battery?

Pp3v3_pmicldo: 3,3v pp1v25_pmicvref: 1,2v pp5v_g3h: 4,999v EDIT: Tried another battery with (maybe) some juice left. DC-in 20V, but doesn't charge. Would this tell us that the SMC would be good after all? What about U7000?

SMC_BC_ACOK: 3,3V PP3V3_S5_SMC_VDDA: 3,3V PP3V0_S5_AVREF_SMC: 3V PP1V2_S5_SMC_VDDC: 1,2V Would this mean that the SMC is faulty? Is that normal on these boards?

No shorts anywhere as far as I can tell. SMC_PM_G2_EN: a few mill's at most. So I'd say 0V.

Yes, I had the same PPBUS_G3H voltage also prior to changing the CD3215. The original was CD3215B01, replaced it with ..B03. SMC_RESET_L: 3,3V 3V3_S5 etc: 0V. Enable pin 21 of U7650 is at 0,8V...

No liquid. Replaced U3100 (CD3215). Didn't help. Same behaviour still. PPBUS_G3H: 8,19V PP3V3_G3H: 3,3V PP3V3R3V0_AON: 3,3V Ideas?

2017 has a different processor=hardware, so nope.

Had the machine running overnight, no issues. Running more benchmarks now, no additional freezes after the first one after replacing C1031. Guess I'll hand it back to the customer and pray that it'll continue working. Will try this on the other board as well. 2informaticos Thanks for your input

Both machines stopped working gradually with the customers. According to them, no drops etc. There's def. no liquid in them. Changed C1031. Worked for a few minutes, then froze. Heating up the board close to the CPU probably made it work for a while. Would that indicate that there's a problem...

I've tried SMC bypass as well. Same story if battery is plugged in. The shitty build in "diagnostics" says there's no problems. No error report on reboot either.

Tried with known good BIOS. Same story, without battery=no issues. KNOWN GOOD battery plugged in= doesn't boot or if does, freezes almost instantly. Usually when there's 2 or more instances of the same problem, there's hundreds of others having it too. Anybody?

All of the aforementioned is done. Swapping the logic board to a known working one= no issues. Have tried to boot with/wo SSD, also from USB on logic board port & on IO port. No change.

I have 2 non-liquid damage 820-4924 boards with the same exact issue it seems. When the battery is plugged it, they freeze whenever there's enough load on the CPU. Sometimes loading OS causes that, sometimes it doesn't. However, if I manage to boot, anything that causes the clockspeed to go up...