MACBOOK PRO A1398 loop

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Inforgalaxie
    Member
    • Apr 2023
    • 39
    • Portugal

    #1

    MACBOOK PRO A1398 loop

    This macbook not turn on when i press the power buton. I need disconect the power cable , press 10 seconds the power buton, and press again to turn on.

    But when turn on not load the system and are looping.. video attach.
    Attached Files

Related Topics

Collapse

  • No Lan
    [Macbook pro A1708] [Boot loop] [Trackpad ?]
    by No Lan
    Hey everyone,

    Usually, I'm not the type to ask for help, but this time, I'm calling on your wisdom and expertise I've seen what this community can do, so I'm pretty sure you guys can help me out.

    Here's the deal: I noticed my MacBook got stuck in a boot loop. After opening it up and doing some initial troubleshooting, I found that the boot loop stops only when the trackpad is unplugged.

    Now, just so you know, the trackpad actually works — I tested it with another motherboard and it's all good. Same for the cable, no issues there. The problem is only...
    05-24-2025, 03:09 PM
  • Document Archive
    Apple MacBook Pro 15'' A1398 051-00330 820-00138 Schematic & Board View
    by Document Archive
    Apple MacBook Pro 15'' A1398 X435 051-00330 820-00138 Schematic & Board View

    A1398 main board resistance measurements (user submitted no further details)...
    10-01-2024, 06:58 AM
  • pippo_one
    Macbook a1398 emc2910 820-00426A
    by pippo_one
    Hi everyone, I have a MacBook a1398 emc2910 with an 820-00426A motherboard.
    I have a short on the "PPBUS_G3H" line... I traced it to the "U7310" IC
    FDMF6808N"
    and indeed the IC is shorted between "Vin and VSWH."
    On the motherboard, Vin to ground = open and it's OK.
    VSWH to ground = about 5,50 / 7.50 Ohms.
    With this measured value, can I safely replace this IC or is the CPU compromised?
    Do you have any other suggestions?
    Thanks for any help you can give me.
    07-20-2025, 03:35 AM
  • nikolayu
    MacBook Air A1932 internet recovery loop
    by nikolayu
    I have A1932 that is going to internet recovery every time.
    i tried nvram and smc reset but it looks that MacBook is not reacting to that.
    i tried to restore it through DFU but it restarts in the middle of process and Apple Configurator does not show any error, just stays like in progress.
    keyboard is working because I can connect to WiFi but internet recovery always fails with 2100 or 2003 error.
    also won’t open option to boot from usb device.

    and I noticed that is not possible to turn off the MacBook. It’s always turning on by itself.

    ...
    07-22-2025, 02:55 AM
  • fisha
    Apple macbook Pro Retina A1398 Battery not charging
    by fisha
    Hallo everyone, my A1398 do not charging the battery and the battery also do not bin recognized. I did all the reset work, SMC reset and all the other reset options but nothing helped. on the SMC at pin 2 (DCIN) there are 20,4V coming in. at pin 16 (BGATE) which goes to the Q7155 Gate there are only 11,43V. at the pin 1,2 and 3 on the Q7155 (Source) there are 12,23V. Cap C7126 is not shorted. As I understand, the gate voltege have to by higher then the source voltege for the gate to clous so the battery can be charging, am I right? can someone help me with this? I guess that manny models are working...
    07-20-2024, 08:39 AM
  • Loading...
  • No more items.
Working...