已解决： Internal display not working after gpu replacement - iMac Intel 21.5" EMC 2308

Internal display not working after gpu replacement

Hi all!

I have a late 2009 21.5" imac with an ati 4670 graphics card.

One day it won't boot anymore (white screen). If booting with the shift key helt down, the imac boots but without graphics acceleration.

So I replaced the graphics card. Now after turning it on, the display remains black. An external display (TV) works fine. So at the moment I can do everything on my TV, even graphics acceleration works.

But the main iMac display remains black. The backlight works. I triple checked if the fat display data cable sits tight and it seems ok.

So what can i do now?

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发帖于: 2015年3月4日

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Sounds like the vertical sync cable is damaged or not connected correctly.

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是否

得分 2

4条评论:

the vertival sync cable? you mean the display data cable?! as far as I read the display should work but vibrate with disconnected v-sync cable. or am I wrong?

由 Tom 完成的 2015年3月4日

It's needed! Did you forget to connect it? And it's correctly inserted.

由 Dan 完成的 2015年3月4日

I took it to a local apple reseller. It was the lcd panel...

由 Tom 完成的 2015年3月23日

That's a bummer :-{

由 Dan 完成的 2015年3月23日

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iMac Intel 21.5" EMC 2308

Internal display not working after gpu replacement

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