820-3787 can the gpu be disabled on this via modified bios? . I have one that I cannot run asd or any macos as it starts off ok logo etc then near the end screen goes black.
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Hi guys, this my first post but i want to be brief about it, i recently got a MBP L2013, the problem was that after some use the macbook shutted down randomly, at first i suspected to be the battery, and after connecting it with the charger i noticed that i didn´t shut, but after an hour or so it shutdown, after that i started searching a solution to my problem, but my brother tried to help me to find the problem and it that process to replicate the problem he reproduced a 4k video in multiple tabs and not much time after the macbook shutdown to never power again, what i noticed was that the...05-23-2024, 05:17 PM -
MacBook Pro (Retina, 15-inch, Late 2013)A1398
I need bios for this macbook -
Sub: Missing enable on +5v sec pwr rail AMD Firepro D500-B/Mac Pro late 2013
Ref: 1/ MacPro6,1 Late 2013/A1481 MD878LL/A (3.5 GHz 6 Core Xeon E5-1650v2)
Gfx-B: APN: 661-7548 PPN: 820-3533-A AMD FirePro D500-B 3GB Vmem
2/ Figure 1 Gfx-D500-B Front Facing
3/ Figure 2 +5v supply (zoom-in)
Intro:
While troubleshooting a Mac Pro(6,1) referenced above I discovered the +5v secondary supply did not stand up on the D500-B graphics card as a result of a missing enable signal. The +3.3v secondary rail was the only rail that did standup. I tried to perform...12-07-2023, 09:55 PM -
Hello,
I have a MacBook Pro 15” A1398 2013 that has no backlight, but I see an image when putting light through the logo. I noticed that when the screen is plugged in, I get a 300 ohms short (see image).
When unplugged, the short is gone.
Any idea? -
Hello, I have an iMAc 27 inch late 2013 EMC 2639 at work that doesn't start, it has a prohibited symbol and/or when I connect the system via USB it stops on the apple.
Is this feature locked in the bios?
Thanks in advance