Try our new boardview, bios, & schematic search. Over 1.3 million files for download!

MacBook Pro 2019 (A1990)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • alfredodinolfo
    Senior Member
    • Jan 2013
    • 128
    • N/A

    #1

    MacBook Pro 2019 (A1990)

    mb code:820-01827-A;
    sn:C02Z349ALVDR;
    i9 32GB Ram 1TB

    Hi, I found short on one of 6 black nand (total 1TB).
    i removed all 6 nand ( voltages all ok) and now i want to program with JC P15 but for A1990 2019 there is only 512GB configuration.
    I try A2141 1TB configurazion with TSB4228 but the position on pcb is different ( U9300 and U9400 is no stuff on A1990 but present on A2141 and U8800 and U8900 is no stuff on A2141 but present on A1990 )
    macbook with A2141 configuration run on recovery but don't complete it.​
    anyone can help me?

Related Topics

Collapse

  • mgourgios
    Macbook Pro 2019 A2141 NAND Shorted
    by mgourgios
    Hello. If you could please help me understand what I am doing wrong...

    This model, Macbook Pro 2019 16" A2141, 512GB, EMC 3347, with T2 Security Chip, had 4 NAND Chips shorted in 1 wing (U9100, U9200, U9300, U9400) and it has 1 more in the 2nd wing (U8600) BUT NOT shorted. All chips are TSB4227 TOSHIBA-KIOXIA SN4192TWNA12014 BGA110 128GB. I got 4 new nand chips for 1 wing and programmed them by specific position of course with JCID P13 programmer.

    I also replaced the tps power ic for the ssd.
    Now all rails come up, including the ssd rails 0.9v, 1.8v, 2.5v....
    08-28-2025, 08:04 AM
  • cheebster
    MacBook Pro 2019 A2141 820-01700 NAND Issue Stuck in DFU
    by cheebster
    MacBook Pro 2019 A2141 820-01700 NAND Issue Stuck in DFU

    Ok, here's an issue ive got on a A2141 820-01700 MBP 16' 2019. No signs of life, 5.06v 0.0a on usb-c meter, on each 4 usb-c ports.

    Nand voltages are missing.

    I've found no shorts at all so far, no signs of heat via thermal camera either.

    PPBUS_G3H 12.31
    PP3V3_G3H_RTC 3.387v
    PP3V3_G3H 12.31v
    PP2v5_NAND_SSD0 0v 58 ohms
    PP2v5_NAND_SSD1 0v 57.8 ohms
    PP1v8_SLPS2R 1.8v
    PP1v1_SLPS2R 1.1v
    P3V3_G3H_SOCPMU 3.37v
    PP0V9_SLPDDR 0.9v...
    10-11-2023, 11:31 AM
  • resistor83
    Macbook Pro A2141 2019 keyboard only works when pressing in one area
    by resistor83
    Hi everyone, I have a 2019 MacBook Pro A2141 and I bought a motherboard on AliExpress because mine wasn't repairable. I installed it and everything worked fine for a few days, but after a few more days the keyboard barely worked. Sometimes if I reset the SMC, it seemed to restart, but it only worked for a few seconds. I noticed that when I pressed on the keyboard connector area, the keyboard restarts, but I don't think it's a connector issue. Have you ever had a similar problem? I've included a video below where I press on the external chassis.

    https://jumpshare.com/share/kDglIrM...
    04-22-2026, 06:07 AM
  • resistor83
    Macbook Pro A2141 2019 keyboard only works when pressing in one area
    by resistor83
    Hi everyone, I have a 2019 MacBook Pro A2141 and I bought a motherboard on AliExpress because mine wasn't repairable. I installed it and everything worked fine for a few days, but after a few more days the keyboard barely worked. Sometimes if I reset the SMC, it seemed to restart, but it only worked for a few seconds. I noticed that when I pressed on the keyboard connector area, the keyboard restarts, but I don't think it's a connector issue. Have you ever had a similar problem? I've included a video below where I press on the external chassis.




    The seller wrote...
    04-19-2026, 12:14 PM
  • misc
    A2141 Macbook 2019 16" - MacOS installation impossible
    by misc
    Hi, maybe someone is able to help.
    My macbook pro 16" 2019 is not installing Mac-OS correctly. I erased the disk and gone into recovery and installed Catalina. It ended with an error. Same with internet recovery with Catalina and Tahoe.I can't install another Mac-OS install via USB stick because the T2 blocks it. I erased the disk and don't have an admin user, so disabling is impossible. Setting the correct time via terminal didn’t help. First aid shows no error at all. Sometimes while installing catalina it restarts and loads the update screen with the apple logo and remaining time...
    04-11-2026, 01:50 AM
  • Loading...
  • No more items.
Working...