Display is black - backlight DOES work, external display DOES work?!

Question

MacBook Pro 17" Unibody

Model A1297 Unibody: Early 2009, Mid 2009, Mid 2010, Early 2011 & Late 2011

544 个问题查看全部

Alex Thomas @estorilm

声誉积分: 13

1

发帖于: 2018年5月23日

更多选项

Display is black - backlight DOES work, external display DOES work?!

I'm miffed on this one.

The other day, I plugged in an external HD TV to watch a DVD. When I woke up the laptop (still connected to the TV) the next day, the laptop's display was black (but the backlight was on!)

I've tried clicking "mirror" and selecting different resolutions to "wake up" the video card an get it to do something, but nothing worked.

I restarted it without the external monitor plugged in, and same thing - black. That's when I really started to freak out.

The display shows up in the settings area, I can even slide the brightness and see the backlight change!

I've tried resetting the SMC but no luck.

I'm a professional photographer and I'm about to dive head first into wedding and event season in the coming weeks and can't afford to lose this thing. :(

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 0

1条评论

Also tried resetting PRAM - I'm starting to think it's the display cable maybe. :(

由 Alex Thomas 完成的 2018年5月23日

添加一条评论

1个答案

已选择的解决方案

arbaman @arbaman

声誉积分: 102.6千

10

54

291

发帖于: 2018年5月23日

更多选项

I would try disconnecting and cleaning the Lvds cable and the connector on the logic board, with >90% alcohol, preferably with battery disconnected to be on the safe side. Since you've already reset Ram and Smc there's nothing else I can think of, besides trying a known good screen or starting taking measurements on the logic board. A 15" screen would be also suitable for testing purposes and probably easier to find.

这个答案有帮助吗？

是否

得分 2

2条评论:

Thank you, I'll give this a shot when I get home. I haven't needed to take the cover off the 17" before - but I glanced through the guide. Hopefully it's just the connector on the logic board side because I'm not messing with the other one! lol It looks like that connector and the battery are easy to access with the cover off?

由 Alex Thomas 完成的 2018年5月23日

Sure they are, as you could see from the guide. Just don't use anything metallic to help remove battery or cable as it might get something damaged or shorted. To be able to mess with Lvds cable you'd need to take the panel apart, not very easy with such a big screen and probably useless too. If it was the cable you would most probably have had some signs such as flickering for some time. Really hope it's not a graphics failure.

由 arbaman 完成的 2018年5月23日

添加一条评论

Also tried resetting PRAM - I'm starting to think it's the display cable maybe. :( — Alex Thomas
Thank you, I'll give this a shot when I get home. I haven't needed to take the cover off the 17" before - but I glanced through the guide. Hopefully it's just the connector on the logic board side because I'm not messing with the other one! lol It looks like that connector and the battery are easy to access with the cover off? — Alex Thomas
Sure they are, as you could see from the guide. Just don't use anything metallic to help remove battery or cable as it might get something damaged or shorted. To be able to mess with Lvds cable you'd need to take the panel apart, not very easy with such a big screen and probably useless too. If it was the cable you would most probably have had some signs such as flickering for some time. Really hope it's not a graphics failure. — arbaman

MacBook Pro 17" Unibody

Display is black - backlight DOES work, external display DOES work?!

1个答案

添加你的答案