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there is a list floating around with all the motherboard numbers and the models/variants there are for every year. Cant seem to find it right now

Have you tried a known good dc-in board

I left it running without a battery and eventually it also slowed down, checked ACOK measured ok.

Only the original battery that the machine came with, will try with a known good 13" battery

Yep tried known good tpad cable trackpad and keyboard

just remembered that there's a sensor in the trackpad so replaced kb connector now power button works and high fan has gone away but left shift ctrl and alt still not working

Liquid damaged power button doesnt work but boots on charger, main issue is fan runs high all the time. Also the left shift ctrl and alt dont work, but i'll look at that later. Im guessing that this is a temp sensor failing, but no efi for these machines is there any other way to view the...

All the one-wire signals go through that connector too

Those suck, just when you're all excited about it working. Sure, but I can't guarantee that the screen on this one is working because it doesn't boot

tried relow on the smc twice still the same, this is weird. Once it goes slow even if i plug the charger back in it still stays slow

both at 3.4 stable

Tried Clean ME region, everything still the same

Scratch that they're, not even the same size. I'll have to use the existing chip and back it up. Worth a shot?

Is SMC reflow worth a try? Will try that bios can I use a chip from a 2850?

Both come up as 10k

I mean 7200 sorry, 3v3_s5 is present and stable but still no 5v_s3

Thanks for confirming, No signs of any corrosion in those areas or anywhere on the board.

5v_s5 is now stable, replaced isl and still same symptoms

I still have the one with the blown cpu mosfet

I dont know if its relevant but EFI ASD takes 5mins on "Search for hardware to run tests"