Hello. SSD UN0000/0100/0200/0300 were shorted in the MacBook. There are 4 SSD chips on the board. I don’t have the same board and I removed two SSD UN0000/0100 chips from the MacBook on the M1 A2338. I installed only these two, but the machine does not recover and gives error 28. I have a question: is it necessary to have all 4 or should it work with two chips? Is this important for the M1 Max processor?
Macbook Pro A2485 820-02100 SSD
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by ugamazingI'm looking to upgrade several 8GB 820-00850 boards to 16GB or 32GB for personal use. I am curious what the best practice and process is for sourcing new replacement chips, and what vendor(s) you guys prefer? Another question is, how do I find compatible chips and their corresponding part/model numbers? For example, in the 820-00850 schematic, the DDR chip U2600 model listed (EDFB232A1MA) corresponds to 1x32GB chip. Of course, I would need 4x8GB chips to replace the 4x2GB chips currently on the board. How do I find compatible 8GB chips? Is it as simple as searching "BGA178 8GB 2133"...
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by spwoofHello everyone,
I'm currently working on a MacBook Pro A2485 and have encountered an issue with the LCD. Instead of opting for a full replacement, I'm interested in performing an in-depth repair on the LCD itself. I'm hoping to find the schematic for the LCD in order to understand its architecture and troubleshoot more effectively.
If anyone has access to the schematic or can point me in the right direction, I'd really appreciate it. My goal is to repair the components and connections within the display, rather than going for a costly replacement. I've been in the notebook...-
Channel: Schematic Requests ONLY!
10-05-2024, 08:02 AM -
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by spwoofHello everyone,
I'm currently working on a MacBook Pro A2485 and have encountered an issue with the LCD. Instead of opting for a full replacement, I'm interested in performing an in-depth repair on the LCD itself. I'm hoping to find the schematic for the LCD in order to understand its architecture and troubleshoot more effectively.
If anyone has access to the schematic or can point me in the right direction, I'd really appreciate it. My goal is to repair the components and connections within the display, rather than going for a costly replacement. I've been in the notebook...-
Channel: Schematics and Boardviews
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by awe126Hello all,
I bought a Macbook Pro 16" M1 Pro, A2485, 820-02100, which working flawlessly but not charging. I thought battery needs to be replaced but then started reading and it seems that problem will be in motherboard.
Battery sign has cross sign and MacOS can't read battery stats. Fans are full speed but can be set down via Fancontrol software.
I did start digging into in and found out below:
Diode mode:
SMBUS_BATT_SCL: 0.529
SMBUS_BATT_SDA: 0
SMBUS_BATT_SCL: 1.795V
SMBUS_BATT_SDA: 0.948V
Can anyone help... -
by tommy97Hi everyone,
We're working on an A2485 MacBook with no backlight after liquid damage. The damage occurred near the backlight IC (UP800). We've checked all the nearby resistors and capacitors, and everything seems fine. We replaced UP800 from a donor board.
However, UP830 was also liquid damaged, and after cleaning, resistor RK830 came off. Unfortunately, I can't find its value, and the schematic doesn't indicate it as a critical component.
Would anyone have insights or a way to confirm the RK830 value?
Thanks in advance!
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