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Checked all J4801pins and no one is shorted to ground (TP disconnected)

In boot menu TP works. When trying to boot in safe mode it loads to 75% approx and it restarts.

Hello MB: 820-00426-A Water damaged macbook, initially wont turn on because of a bad TP, only corrosion around J8300, cleaned and disconnected the TP and mac turns on and boot (with fast fan and slow). KB also bad. When installing new TP and cable the machine turns on and when loading SO...

The issue persist with the battery charged. Any comment on the other questions?

Hello The computer boots up and works fine with charger connected, if charger disconnected the computer wont boot and it shows the folder on the screen. I know might be the issue with these SSDs. This one also needs battery replacement. My questions are, 1. If i replace the battery for a...

Hello guys, I am having that exact same issue, what is the recommended solution? I saw that the 512gb version doesnt have this issue.

It seems DCIN board was not completly connected... thanks!

Thanks for your help. I added 3 resistors and the board seems to be working, however the battery is not charging, no green/orange light, I do see the lightning on the battery icon. Any help?

I bought this board on ebay and it arrived damaged (see attached image, damaged and donor board). All resistors/caps close to j8300 were ripped, I cannot see the trace in all of the pads so not sure if I could install the components from a donor board. The boardview wont match the board...

Both Hdd and ssd have known good installation of high sierra

Thanks It is working BUT I cannot boot from my HDD/SSD, I see the folder and I can boot from usb OS installer but it wont boot from the SSD not even connected via USB. When connected inside the mac I can see the SSD on the Disk Utility of the USB installer. Could be the Bios?

Hello. Is there a way to disable the GPU by reflashing the bios? I know and I do the dosdude method... I just want the DUMP to test the computer to see if there is other problem. If available, could provide the bin? thanks

Only backlight, I can see the image with a flashlight

Hello! I replaced the GPU card on this Imac because of distorted video issue. It came back 3 days after with another issue. The screen is flickering, the computer is still on, you can still hear the audio, no freeze, after some flickers it came back ok. Any idea? Thanks

I checked all you mentioned and same problem, proceeded to check board and noticed that C3531 was ripped from board. Replaced it and now the wifi is working. Thanks

Hello. This macbook came in for speaker connector replacement, (they ripped the old one) , after replacing it I noticed that the macbook is not detecting the wireless card. I have tried with another flex cable (not with other card) and same issue. Any help? NOTE: I do see the icon of the...

Hello. This macbook came in like 1 year ago because of distorted image on the screen, in that time I resolder U8900 and reballed the GPU. The computer worked fine for that period of time and now it is randomly crashing: black screen followed by a restart. It says "panic (CPU...") Ive red...

Reflow ram?

PP1v35_S3_MEM: 1.38V PP0v75_S3_MEM_VREFDQ_A: 0.698V PP0v75_S3_MEM_VREFDQ_B: 0.700V 4 retainers of the heatsink are fine. No damage around retainers either. Thanks

Hello I have this board, no signs of corrosion or any damage. I get voltage in all the big coils, turn on, no video and 3 beeps Any idea?