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모델 A1502 / 2.4, 2.6 또는 2.8 GHz 듀얼-코어 Intel 프로세서 / 2013년 10월 출시

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Internal Screen Intermittently Lights Up

My Macbook Pro works perfectly fine, until the day I dropped it. After that the screen does not come on, no picture even when shining through from behind with a torch. Was going for exam so I did not bother to fix after my first fixing attempt yielded no results. Left it for approximately 5 months, decided to try fixing it again after watching several Louis Rossman videos, took it out, turned it on, no power, plugged in charger, heard chime, screen comes on as if I was dreaming the whole thing. After a few hours, symptoms started to appear. The screen comes on once in a while. External display works flawlessly every single time.

Symptoms that I have experienced:

1) Does not light up at all, no picture.

2) Apple logo shows during boot, then screen goes dark but MacOS boots successfully.

3) No screen during boot, MacOS boots successfully, connect external display and showed desktop, disconnect external display and internal display returns.

4) Boots perfectly, when it sleeps due to inactivity, screen does not come back on when waking up

5) (May be coincidence due to not being able to reproduce 100%) When booting normally, no screen, forced restart to boot recovery mode, screen comes on as usual

6) Boots normally, but Apple logo shows very small logo(as if internal screen was some 4k screen) then suddenly changes to big logo(usual size), then boots normally

7) Boots normally, Apple logo shows, when desktop shows, display is fuzzy and broken all over(imagine a busted GPU)

All symptoms are discovered because I initially believed it was a software issue, and after several restarts, the symptoms does not point to software issue.

What I have tried:

1) Reset to factory

2) Formatted

3) Re-sit display connectors to logic board

4) Take out battery and re-sit

5) Disassemble logic board to inspect for burnt parts(none found using magnifying glass)

Planned next step, disassemble monitor to check for loose IC. But anyone got any idea before I proceed?

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How about posting some pics so we can see the damage (if there is any).

Hi, I can definitely post pictures but what pictures would you like?

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From what you describe it sounds like the T-CON board is having issues. This is part of the LCD panel. While one can replace the LCD panel part its a bit of work and if you've never done one you'll likely encounter issues. I would recommend you just replace the full lid assembly which is easier MacBook Pro 13" Retina Display Late 2013 Display Assembly Replacement. Here’s one source for the needed part 13” MacBook Pro Display Assembly (L13/14) Grade-B, Apple P/N 661-8153

Here’s a teardown of the display so you can see what would be involved MacBook Pro Retina Display Teardown. Jump down to Step 8 looking at the middle image the bard at the top which is attached to the LCD panel is the T-CON board. This is not really repairable.

MacBook Pro 15" Retina Display Mid 2012 이미지

안내서

MacBook Pro Retina Display Teardown

난이도:

보통

MacBook Pro 13" Retina Display Late 2013 Display Assembly 이미지

안내서

MacBook Pro 13" Retina Display Late 2013 Display Assembly Replacement

난이도:

보통

30 minutes - 1 hour

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Hi, thanks for the suggestion. I did looked at the teardown before this and your suggestion sounds like a very plausible answer but any ways to determine if its really the T-CON board that has issues without replacing anything? I do have some experience disassembling stuff so I wouldn't mind trying it out. Replacing the whole monitor is too expensive for now. Cheers :)

Sadly, you would need special fixtures and test gear which would be more expensive than the replacement part ;-{ Apple didn't maker it easy.

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