It boots, chimes, keyboard, fans, responding,

Question

MacBook Pro 17" Unibody

모델 A1297 Unibody: 2009 상반기, 2009 중반기, 2010 중반기, 2011 상반기 & 2011 하반기

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Vassilis Giannakopoulos @topsyst

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게시일: 2020년 7월 15일

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It boots, chimes, keyboard, fans, responding,

Hi,

My favourite Macbook Pro 17-inch A1297 2011 model is powering on, with black screen. I tried resetting (CTRL,Shift,ALT,Power & CMD,ALT,P,R) many times, but nothing changed. I can hear Apple Logo chime, I can hear HDD working, as it is loading OS (High Sierra) , I can see keyboard backlight turning on/off depending of external lightning, but screen is totally black, no backlight at all (tried with a torch just in case). I connected external monitor (with tested adapter), but even after loading OSX nothing also to external display. No water damage at all, I am the only user. Also have checked LVD connector, everything seems fine.

I know graphics issues for this model, board had replaced free from Apple repair center a few years ago (replacement due to graphics issue). I never had graphics problem, and was keeping always coolers clean. Any help could be highly appreciated.

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DunCanP @dunc 평판: 245 6 1 · Answer 1 · 2020-07-16T08:19:13-07:00

DunCanP @dunc

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게시일: 2020년 7월 16일

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Looks like there could possibly be a short in the LVDS:

https://youtu.be/KjIQXwitWCI

Try it and see if it works and update if it does.

Try to disconnect the LVDS connector and see I it boots to external monitor first.

Good luck

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Yeah, I have seen that video, but unfortunately not. Same with LVD disconnected, it chimes, boots, you can hear HDD working, keyboard backlight turning on when it loads OSX, but nothing on screen. Could it be a bad graphics card? Usually there are distorted screens, strange colours, and not able to boot if so, but totally black, and everything seems working ? I can hear HDD spinning after a few minutes, when I am entering my user password …

Vassilis Giannakopoulos 의 2020년 7월 17일

Shorted IC components along the graphics line can also do this. I think you'll have to look up some Louis Rossmann videos because one of this solutions could help you. Of course, if you aren't able to do IC board repair, it's most likely something he could fix and you'd have to send it in to him.

DunCanP 의 2020년 9월 18일

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MacBook Pro 17" Unibody

It boots, chimes, keyboard, fans, responding,

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