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green light changes to amber. Kinda thought that was needed for the other power rails to come on. Same with pp3v42_G3H. Do you get any cpuvcore or others with that missing? No battery connected - didn't mention that part. makes sense now your question. ppbusg3h at 12.57v pp3v42g3h at 3.42v no...

Hey all, Severely waterdamaged board. Hobby board. My 25mhz signal is terrible and dropping with the fan cycle. Looks like its possibly not getting pulled all the way to ground? R1885 and R1886 checked out ok. 32khz is fine and always present. cpuvcore is only present with fanspin. Should I...

Hello all, Before I asked about the Sealed Battery Test failing - and it seems that is quite common and does not effect usage How about the other tests? I assume Error Condition Test would effect the computer speed How about the RA table test? At the moment, one of my replacement batteries -...

Thanks for the heads up on Diskmaker X. Still wouldn't install. But the program worked well for me! So... Ran some integrity w/r tests for volume on the pen drives. They checked out as ok so that's nice. Must be the installers then... Deleted both, and redownload (took all day) but with a lan...

Ok. Feeling stupid for not trying this before. Pulled SSD, Stuck in Sierra installer usb - Said it was damaged an could not install. Rebooted with High Sierra installer usb - hung during loading apple bar and corrupted BIOS for reboot. - So, not the ssd... Has to be the install medium now. The...

smiba, Thanks for dropping by! Haha I see you on here a bit giving some great advice too. The sierra installer is from the app store just before high sierra came out. Same with HS. I did have the installer work fine at the beginning of the day with sierra, and previously with other updates...

ok, so, with my spare board, in a spare test housing - with the same ssd and sierra install thumbdrive boot into installer, try to install and i get the error This copy of the Install macOS Sierra application is damaged, and can't be used to install macOS. Then after rebooting the Bios is...

Thanks a bunch Duke, a couple month ago I asked about that video where Luis did it, seemed pretty streight forward and worked ok for me - KRID area to 17D000 block size pasted/written to OK bios.BIN. Yeah, shitty cliff-notes version. But that's the idea right? So... 10.11 first, Let flash EFI...

OK, confirmed that both boards had corrupted ROM. Ideas as to why? Both happened during clean installs to sierra. Sierra (same pen drive and installer from before) Installed and worked fine after. Tried to go from sierra to High Sierra, said there was a problem and couldn't install at the end...

Switched with a doaner ROM, Booted to folder with ?. Great start. SSD in disk utility said it was an APFS Container. I am now getting an error with High Sierra that the application is damage and cant be used to install macOS. That is odd... I have. the originally installers for Sierra and High...

I can't ever remember the key names, just the patern. SMC reset keys meaning that exactly, shift+Ctrl+alt then touch power - while screen is on - and the SMC reset initiates. That I found odd. Holidays here till Monday, will pull the BIOS and take a read, should I trust my doaner board/s for a...

I did, but as I mentioned, now both boards hang before the apple logo - With or without SSD or other boot media Ill clifnote till now Original working board - Was working perfect for 3 years, no prior repairs or problems. Basic data transfer and reinstall job. Tried to load from sierra...

They were, untill I started the updates to sierra

Thanks Duke! You rock

this is 2 different boards now though... Both all of a sudden came down with bad ram or a randomly cracked trace? I mean, I just bough this board and received it today working. Sure, it wasn't new - but that's the original working board and now this replacement board both died while I was in...

Brain juices flowing - 4hdd/11/4 error with high sierra... I don't know how the updates work. I am going to take an educated guess and say that during the update process, the SMC is updated too with new code? So, SSD problem could potentially cause a failure to write valid/new info to the SMC...

Quick update - SMC reset with no battery - light goes from amber to green, then the moment amber again, the screen turns on and just hangs still. If, while the screen is on - cmd, opt, shift, power - like an smc reset but the system is on - The screen instantly turns off - amber light goes...

Alright, thanks guys! - For future reference for a quick sheet - What models should I be weary of? MBP 2011-2013 15" or all sizes?

Ok... What the fack.... So, today i got my replacement mobo/test machine. Poped the old mobo in to the working houseing - same problem - so not the screen. Pop the replacement mobo into the old computer, works perfectly Install SSD, all is good. Boots and all. No obvious issues. Client wants...

Hey all, Got brought a dead MBP, client states he brought it in for maintenance a few years ago to another shop. After a year, he says it didn't power on randomly, so he pulled the bottom case and said that he found a screw floating around in the system on the mobo. Says he kept it for another...