Recent content by Inwerp

Thanks to Discord chat, piernov and ChrisB, we found a solution for this problem. Q1920 is a Strap to temporarily disable ME region. I had 2 boards, 820-3437 and 820-00165, both with the same "boots till 100% than freezes" and "iGPU kext timeout" in Verbose mode. 3437 had some water damage on...

Seriously, Louis, you should allow Russian/Cyrillics here, suka blyat': Here's a pastebin https://pastebin.com/988zxAzf

this is TPS62180 and it would be absolutely wrong and disrespectful to translate "apple notebook schematics" in Russian: "????? ????????? Apple" and god forbid someone looks in google for it.

Can someone give me a "normal" partnumber for this chip? As far as i see it has full short circuit to ground and i hope it did not pass 10.8v directly to the SSD. once again - macbook 15 2018 is a piece of shit which sucks water right into the SSD power IC, killing the SSD with zero data...

OK, solved. that was a keyboard damage and since i happend with two devices i decided to repair it instead of replacing the keyboard. on keyborard jack , pin 8 from left, jumper to the testpad 2cm higher(just near the partnummer stuff), first row 3 from right is a SMC OnOff. quick diagnose -...

yup, i mean R5226. Trace is perfectly fine as well as cable/jack. I guess i need to order the whole topcase to localize this issue.

what glue did you use? still looking for something which fixes fast enough but does not glue my fingers together like cyanoacrylate

why dont you use cracked lcd as a test screen? this glitch looks fat enough to be visible on the old screen as well. whould be rather funny to know thats a firmware issue

i have 2 devices with the same problem. had one last month, customer needed to backup his data - so he took the device as soon as he saw apple logo (in urgent cases i allow customer to see the process) power button does not work, kind of shorted but not. call me dumb, i do not get it. SMC_ONOFF...

I wonder why it fails so funny, i mean it does not really pull down the smbus, it just posts some trash so line wont be recognized by smc anymore. I mean i do not see any difference on oscilloscope, but it definetely fucks up the whole line. Afaik it fails pretty often in the exact same way...

so if someone looks for a sollution without replacing crappy flexgate display. remove R8556 R8558 to cut failed sensor from the SMC communication line. camera works, no idea if something else will not work(i guess some crappy light sensor should be definetely dead, who cares), would not...

with display connected i got 128C on all sensors except CPU/Gpu internal and "incoming air" . Also, Camera can be disconected separately (small cable left to the USB C side), makes no difference. also i have 1/2 Sec pulses on Airport Temp sensor (the only one i can measure in chassey) without...

unfortunately i have no display assembly to test. if it was older board it could be SMC SDL SCL shorted to ground but this board has only one chip on this line for CPU Thermal sense + Camera. I hope its not The Camera because than it will really suck. I will check with HWMonitor, device boots...

minor waterdamage in Backlight Area, nothing special. Signs of fluid in Camera connector, no corrosion, cleaned, resoldered. Backlight Ok(removed corrosion+ replaced U8400), chimes, boots, 100% Fan/AHT: PFM006, NDC001, PPN001 PFM006 and PPN00 = temp sensor, NBC001 = Camera, nothing really...

You should put your probe on the cpu side of the inductor. The reason you're reading 0.1...3.8v is that you're reading output of the buck converter which is basically a sqare wave with a pulse width proportional to voltage. As for random start behaviour, you need an oscilloscope to check all...