MacBook Pro A1398
HalOoh guys.....^_~ i have a macbook pro A1398.. when i press the power button it chime but no display... i tried to reset smc and pram but still the same... what could be the problem of this macbook...
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Re: MacBook Pro A1398
here is the diagram and boardview ... check if you have the correct voltages ..
https://www.badcaps.net/forum/showthread.php?t=57505Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:
>>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<
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Re: MacBook Pro A1398
There are 5 different models of A1398, which one it is?OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: MacBook Pro A1398
@piernov, tnx for the reply...^_~ 820-3787-AComment
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Macbook A1398 - had repeating loop of startup chime with no actual boot. Just startup chime, then restart, start up chime, then restart, etc. I pulled the battery and cleared BIOS. It will now power up, fans on, CPU warming, but no startup chime and no boot. I reflashed the BIOS chip but the same thing happening. Where should I go from here?06-14-2023, 11:45 AM
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Hello guys...
I bought MacBook from a garage sale the owner told me that the MacBook was dead and it did not display nothing, at first I thought it was related to a t2 problem so I did the bride OS with my other MacBook I was able to revive it but it did display the apple logo but on the apple configurator the lock symbol was there upon further inspection the MacBook did make the chime sound every time I disconnected the power cable but still it did not show any display also the caps key was able to light up, with nothing else to do i remove the motherboard and found the following... -
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 -
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.Yesterday, 03:35 AM -
Hello all,
I have a weird issue to solve here. This macbook air came in showing a black screen even though the backlight was lit. The display was not the issue as I tried another known good display. Upon trying to restart it, sometimes it boots up but freezes at the login page. More commonly however, the macbook will give the chime sound but then get stuck repeating the sound. The first chime sound is normal but the subsequent chimes sounds are crackly. Voltages seem normal, no liquid damage. I did find a blotch of something near one of the crystals on the other side of the CPU...
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