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Nope, just my stipulation haha, you were right it was the BIOS. Reflashed with New ME, PRAM reset and walla, working perfectly. Thanks!

Edit: Removed U6100, diode mode readings are below. pin 1 - 0.525 pin 2 - 0.503 pin 3 - 1.711 pin 4 - 0.000 pin 5 - 0.574 pin 6 - 0.575 pin 7 - 0.590 pin 8 - 0.422

This is starting to puzzle me. All power rails are present and the machine is turning on. Signs of liquid damage however extremely minimal and have nothing to do with any critical components. Fans spin, all main power rails are normal, I get USB light however no activity, and I get a...

PM_SLP_SUS? PP_3V3_SUS?

Short to ground on PPVCC CPU.

820-3437, came to me taking 20-21 miliamps with just power connected, when connected to power board it showed red/green light and took 24-26 miliamps. I measured all rails, and all seemed good except for PM_SLP_S4, and thought it was a corrupt ME or something like that. IT WAS, however now that...

I have an 820-00165 that only fully turns on in SMC bypass mode. The Macbook enters S0 state but only for about 5 seconds, then comes from 500 man then goes to 6 mahs. Another weird thing I'm noticing is PPBUS_G3H is at 9.28V, instead of the normal 8.6V, and when the Macbook goes to 6 mahs...

Could using the efi variable that disables the GPU work? Also do you know what that variable would be and how to do it without booting single user mode?

I was already booting off USB, no SSD is connected. Will try a clean ME. What else could this be? EDIT: Used clean latest ME, still same kernel panic.

Still thread 0 kernel panic.

UEFI Shell? Reflow the GPU or just heat?

Replaced with good FDM 6708 chips, still kernel panic, bad CPU?

Cant even get to terminal. I suppose you mean Single User mode, however it kernel panics when booting to there too. There is a macOS boot argument (pmsafe_debug) that puts the CPU into a safe power mode, I wonder if this would do anything however I would need to boot into a bootloader to set the...

Software Mods are out of the solution, I cant boot into single user mode, or any OS, and EFI bootloader may work though. I see all these "NEW" FDMF6808 chips on eBay however they are all from China, and another seller that is U.S (laptop-mb-seller) however I have bought some GPU's from him...

I dont know why I did that, I dont even remember doing that, sorry!

MacBook Pro has no signs of liquid damage, power on quickly and fine, passes Apple Diagnostics but kernel panics on startup of any OS. The kernel panic is weird though because no kernel extensions are in backtrace, all it says is Thread 0 crashed. I have kind of narrowed this down to being a CPU...

Still same issue Im going to rebal SMC

Ok, I will remove J6100 I will reflash U6100 by desoldering and using a clean ME and good BIOS. Do you know where I can get a good 820-3437 BIOS? All I have are 820-00165 BIOS.

I dont know how I quoted the entire post, I know the forum rules, I did not mean to do that, sorry! No USB activity confirmed. USB Power is present, NO activity. Should I enter SMC bypass mode to confirm this is an SMC problem?

00165 do not do this, it has something to do with the Haswell chips and the SYSCLK chip? I think? not too sure why but this is 100% normal.