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Could somebody share a clean BIOS for 820-01237 please? I've downloaded several ones and they don't work or they are 16MB instead 8MB...

Board has slight liquid damage on U3100 chip (photo). I’ve replaced the chip itself (CD3217B12) and other SMD components around, checked resistances and traces - all fine. Computer is turning on and working, but does not charge the battery (doesn’t even detect charger connected). With battery...

So this case is really weird. I got an 820-00928 after slight water damage around J8500 and U8500/U8501. I have replaced U8500/U8501, J8500 and eDP connector on LCD side. Also put new eDP flex. I've found out, that EDP_AUXCH_C_P line is shorted, so I've replaced U9850. Now computer turns on...

Working on M1 Air with 820-02016 board. Customer turned it off in the evening and in the morning couln'd turn it back on. Board has no signs of damages, corrosion or so. It doesn't switch to 20V, stuck at 5V and fluctuating between 0,038A to 0,13A. Trackpad doesn't click, can't get into DFU...

I got an 820-01958 after liqiud spill. Motherboard was not affected at all, no spots or corrosion, only audio board had some corrosion. Anyway board was completely dead. I have found out, that PP1V8_G3S is shorted in U6400. I have replaced that chip and short is gone. Board switches to 20V...

I'm working on 820-00281 board which is not turning on. Customer states, that it just died with no reason. There is no liquid or physical damage, no corrosion, no other repair attempts. Board switches to 20V but gets stuck at 0,04A. The PP1V8_SUS and PP3V3_SUS are missing, no shorts. Also...

Hello! My costomer brought in a mac and complain, that two left side ports won’t charge anymore and only one right side port is working (upper one). Amp meter wasn’t even lighting up on left side ports, upper right port was working fine (switching to 20V, charging), bottom right was...

Hi, I'm working on 820-01949 board which has slight coffee spill on it. Affected areas are R7439, some corrosion on caps around 7210 and U7100. R7100/7101 have been eaten away along with their pads. I have cleaned up all corrosion, replaced components, resoldered U7100 and recovered traces...

Hi, could you please share and tested, working BIOS (clean ME) for the board 820-00292? I have a problem with this iMac, it constantly turns on, starts loading system and then restarts with message "computer restarted because of an problem)". I'm not able to enter boot menu or diagnostics or...

I got an water damaged MacBook Air A2179 with 820-01958 board. The liquid affected areas were (pictures in attachments): USB-C controllers and D3302/3322 Q8401/ R8400 along with with backlight caps U6500 area Trackpad electronics Audio board connector eaten away as always J6100 had some...

Hi! I'm working on 820-00138 which is not booting to OS. Actually for most of the time it's stuck on Apple logo, there is even no progress bar. Sometimes after many SMC resets it will load OS to user screen or opens boot drive selection, but for most of the time there is only Apple logo. Board...

So I got two A1398 2015" with 820-00138 boards from different customers, but with exactly same issue - no backlight (image is present). One of them is untouched, the other one has been worked on, but the other technician couldn't find the solution for backlight and gave up - he replaced LVDS...

Maybe it's kind of noob question, but I've never had such case. So mentioned 820-00165 doesn't want to format its internal SSD. Actually it can't unmount drive in order to format it. I have tried different drives and different installers - the same result. If I connect SSD with installed system...

It's already third time this computer returns to me with the same issue. It's iMac 27" A1312 with 820-2828 motherboard. Customer uses it for video editing. When he leaves his summer house where this computer is located, after few days computer won't power on. He has to disconnect power cord few...

I'm working on 820-3476 which came for no power. It had some slight corrosion on JTAG, around R7202, U7600, some on C3201 area and really small stain on U6100. I have removed JTAG, cleaned eveything, replaced damaged resistors, caps, resoldered chips (U6100 too). Computer turns on, works on...

Customer brought in A1278 which was not loading system. I have noticed, that computer had Fusion Drive configured with SSD and HDD in optical drive bay. I took out both, put new SSD and cable, installed new Catalina which went smooth, but in the end computer started restarting. It was loading OS...

I have an 820-00840 on bench which came with water damage. The only area which had slight corrosion was U8210 and R1355. After cleaning and refreshing this area board starts, takes 20V, trackpad clicks but board is stuck at 0,26A. There is no chime, no image, no post. The voltages I have...

I got water damaged A1932 ( 820-01521 board). Motherboard itself had only few small spots of liquid around L7670 and J6620, the rest literally looks perfect. I found out that the battery is dead and needs to be replaced along with trackpad and trackpad flex, which were corroded. I put new parts...

Recently I got this machine for EFI unlock. It has T2 chip onboard. So I read about EFI unlock for these devices and got a bit confused. There is misinformation in this topic. Some people think, that it’s possible to read T2 ROM chip and remove EFI password like on machines without T2. Some...

This one is really strange. I got A1398 which is working perfectly fine except right side USB port, which is working partially - it recognises external flash drives, USB mouses or even boots and works from external drive OS, but the problem is, that it doesn't recognise iPhone at all. AMP meter...