Black screen - works sometimes
Hi
I use ifixit so much and always find my answers here but now I'm stuck.
I've got an 27 inch core2duo late 2009. After booting the screen turns black (so I see the apple logo and then the screen turns black, the machine stays on and I hear the HDD). I tried the LCD on a different iMac also late 2009 and then I got it booted but after a few seconds it turned black again but you hear the HDD run. I exchanged the LVDS cables and they both do the same. I know the LCD issn't completely broken because it sometimes works...
Question is: whats causing the LCD to turn black after a few seconds?
Update (06/08/2015)
Dan included is a screenshot os temperature gauge pro. I kept on googling and I think there is something wrong with the led strip on my LCD or the board steering it.
kind regard
Frederik
Is this a good question?
2 Comments
Hi Dan
I finally had time to take another look at my iMac (%#*@ exams!). I did what you said and aimed a flash light at my screen and indeed I see my desktop icons. I plugged an external monitor and the desktop is visible on it. Video's work perfect so I know its not my GPU. Sometimes when I hit the on/off button the screen is visible for about 3 seconds. Strange thing is that my other LCD from my other 27 iMac didn't work ether on this iMac and also didn't this LCD didn't work on my other iMac. So I'm quite sure that the problem is in my LCD. But how can I fix this LCD?
Eternal gratefulness is promised :)
KIND REGARDS Frederik - Belgium
by frederikvancraywinkel1
Did you download Temperature Gauge Pro? What does it shows you on the LCD panel temp sensor.
by Dan