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Reballing smc did nothing. Today my donor arrived, replaced smc but nothing. After replacing u6901 sys one wire was gone. I checked on diode mode under smc with donor and found out sys one wire had a value completely wrong. Turns out the via was damaged but not too much. A small bridge fixed the...

i did not know that i could have a working cpu with dead outputs. interesting. i have replaced cpus before (in other machines), so in case i can replace this one too. Is it possible to source good ones?

i checkd and it seems clean. customer said it worked on external screen. i got image on external once. now nope. cpu is getting warm (not hot) i get 1.1 on l7270, l8050 and such, but i have no voltage on l7220 l7210 l7410 l 7420 l7430 they are all from 3 to 7 ohm to ground

no, damage was only on the back/keyboard side. although this was uscd before

got a pre worked on 820-00923, they replaced c7053 c7055 r8442 and edp connector. fan spin and all. no idea why they replaced all of that, they usc it so i have no clue remaining. i saw more oxidation on u8500 and u8501, repalced those to be sure but still no panel_3v3_en and panel p5v_en

hi got an a1502 820-3476 that had wd trackpad. customer replaced it but it didn't work. i tried another one and same, tried a known good one from another machine and still doesn't work. the button works fine. keyboard works fine. cable is brand new. no oxide on the motherboard and anywhere else...

hi, got this board that had a short on pp3v42_g3h near smc. very oxided. no oxidation anywhere else. received a good bath in my crest. the shorted caps were C4902 and c4905. i have no fan spin not even shorting smcon naturally, but i do not even have magsafe light. i tried another magsafe...

ok after a FIGHT against this machine here is what happened: replaced the cap many times with different stuff..no change. reflowed mux after removing edge bonding. machine worked fine for 15min. then dead. turned back on to: reballed and worked fine.. for 30mins or so.. then it died again...

gah it is an ignition type.. such bs tried swapping bios from another machine i have but same old crap. it gives oanic on nvram now

cleaned me.. same issue

nope.... high sierra from a usb key crashes after reaching aroun 80% installation. and internet recovery gives the 1024/2048 error with the only ram bank that actually passes asd... amazing

i did use only on ram module. the error was on ram test. but it stopped doing that with a corsair macmemory. although now it hangs directly. tried yet another bank on 10600 using a bit of thermal pad under the ram slot and it passed asd. gonna try to install hs and see what happens

it is a 820-3115... i am starting to believe there are some issues with the ram slots

Replaced ram with a brand new one. Cleaned slots. Replaced cpu paste. Asd hangs and freeze here

Efi version of asd passes it

Asd crashes as soon as I load it. Kernel panic

ran a second time efi one and it gives Error-buffer too small-

which one should i use here?

brand new cap. used an old cap from a ps3, tried a ceramic. same stuff. doesn't solve the kernel panic. what could it be?

tried everything. cam back to this machine now but nothing. bottom of my drawer and i have to fix it... it works only if i install the os on another machine and then put the ssd on this one. even tried update to mojave from sierra from inside the machine but once it finish installing it reboots...