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... -
Hey guys,
I got a MacBook Pro a1989 820-00850-A dead for repair. The MacBook itself was off for a month or so and it didn't power on. I tested using ammeter and it was stuck on 5v. Opened the machine and found a short on ppbus_g3h, corrosion near the right spkr_amp. removed the spkr_amp and saw short on ppbus_g3h. plugged in to power, boosted to 20v .600A and then back down to .300A. Trackpad was clicking when on .600A but no image etc.
Later, I tried again but it dropped down to 5v and never boosted back to 20V. checked board again and found ppbus_g3h shorted again....10-06-2025, 08:45 AM
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