Apple MacBook Pro 13" Touch A1989 820-00850-A Schematic & Board View
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Apple MacBook Pro 13" Touch A1989 (X941) 820-00850-A Boardview...10-22-2024, 04:12 AM
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Apple MacBook Pro 13" A1989 820-00850 820-00850-A Schematic...10-08-2024, 02:17 AM
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Hello all, I have been trying to remove the password on a Apple Macbook
A1989 820-00850-A with no luck, I still have a lot to learn yet.
I got this file from ******************** pay site and its locked, it boots but
still has a password on the system.
Could someone remove the password please, The chip I have been replacing
is U2890 USON8 2X3mm the bios file is 4.00mb, I have another file but its
only 1.00mb, Have I been programming the right file the 4.00mb W25Q80DV?
The original chip got destroyed.
Thank... -
Hello,
This special tool from Apple is used to recover data from Macbook A1706. I've been using it for a while but it stops working. When connecting Thunderbolt 3 between the tool and working Macbook, Macbook should prompt "new device detected, allow or not"... but it doesn't.
Has anyone ever experience this ? It's not a cabling or power supply issue, some IC have stopped working but not sure which one. Probably the one that manager thunderbolt 3
Thanks
Claude... -
Today I have a MacBook A1989 at work 820-00850. When assembled, the laptop switches to 20 volts but the consumption is 0.00 ampere. if the motherboard is on the table then the consumption of all ports is 5 volts and0.35 amperes and does not go to 20 volts only if you assemble a MacBook.
Here are some measurements, maybe someone can tell what the problem is.
The initial problem was a burnt out induction coil L8504 (replaced).
When connected to another MacBook, it constantly hangs in dfu and cannot install updates, something is wrong.
here are some measurements
motherboard...