i hope works for you 
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My MacBook pro charges fine. all voltages look ok with exception that I am measuring 1.78v where the schematic shows 1.85V on PPVCC. is that too low to work?
It powers up for approximately 10sec then shuts off. Repeatable responding to the power button.
I have tried everything i could find on searches.
The only thing left perhaps is those three mosfets that provide that voltage.
Is that what i should try next or does someone have a brilliant idea for me
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Today, 12:02 PM -
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.07-20-2025, 03:35 AM -
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... -
Hi everyone!
I have a 2018 MacBook Pro (with Sequoia OS) that I've been using for years with no problem. I recently received an M2 MacBook Pro so I'm mostly using it and not the 2018 one, but since a friend of mine needs a computer, I thought I could restore my 2018 and give it brand-new-like to my friend.
I tried using the built-in tool to restore the MacBook (Settings > General > Transfer or restore > Delete) but it got stuck when trying to remove the Find Device configuration (it asked me for the password for my old Apple ID -now I use the same account but...06-27-2025, 08:54 AM