Hi, why do I get Graphic lines on MacBook Pro A1398 (Retina, 15-inch, Mid 2015)(Motherboard 820-00426-A). I did a PRAM reset, still the same. The screen is not broken any where... These lines upon boot up changes to all small dot all over but I can see first the Apple logo clearly & the login screen too. Removed the LCD cable & attached Monitor to the HDMI output, external display works great, no lines at all. Any help will be appreciated. Thanks
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Last edited by mferna14; 04-21-2021, 04:24 PM.
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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 -
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 -
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