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Schematics A2141 820-01700 X970

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A2141 820-01700 X970
Schematics, boardview
LB_820-01700_BoardView_file_LO25
A2141 820-01700-A UB090.bin
A2141 820-01700-A U2890.bin
 

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A2141 820-01700 X970.pdf
11.4 MB · Views: 5,838
LB_820-01700_BoardView_file_LO25.brd
1.2 MB · Views: 5,626
A2141 820-01700-A U2890.bin.zip
503.1 KB · Views: 252
A2141 820-01700-A UB090.bin.zip
503 KB · Views: 223
Last edited:
Click to expand...
the macbook was not turning on.

had a burnt mark on u8600 near it's corner

it wouldn't go from 5v to 20v

I applied 8v to ppbus_g3h, after that the Mac went from 5v to 20v

but u8600 was getting very hot, I took it out and tested it out this NAND has internal short to GND on PP1V8_SSD1. so bye bye DATA recovery.

did anyone here has fixed SSD problems on T2 MacBooks?
 

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20210806_084255.jpg 20210806_084235.jpg 20210806_084226.jpg 20210806_083857.jpg
I think I somehow damaged U4770 trying to use a modded CH341A to pull .bin, I've done it a few times already no problem and I don't see any damage but I kept gettting errors detecting the chip (MX25U3235F) and after hours of messing with progammer and software I checked the chip and pin 2 value is off, I wasn't able to read so my question is it possible to purchase a new chip and flash with new .bin?
 
Dhaka Lab said:
please clear me A2141 820-01700-A
Click to expand...
This is not the first time I have mentioned this
All new model macbook using Apple T2 chip will not have BIOS it's like iphone
The 4mb file you see is just non-BIOS information.

and remember this don't let me repeat
 
ThienBui said:
This is not the first time I have mentioned this
All new model macbook using Apple T2 chip will not have BIOS it's like iphone
The 4mb file you see is just non-BIOS information.

and remember this don't let me repeat
Click to expand...
i don't know why but 4mb is not BIOS so don't care about it
 
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