iMac 21,5" late 2012 lcd backlight not working
Hi,
This iMac has no backlight anymore. the diagnostic leds are all oké. Is this a broken lcd or is this a logic board problem?
Thx for the reply
Sadly, this implies your logic board needs repair. Either a fuse link or more likely the backlight LED driver burnt.
这个答案有帮助吗?
I did the test with the external display and this is working fine... So still the fuse or backlight LED driver?
Without opening and testing things out I'm just guessing here ;-} The good news its' not as bad as it could be!
You'll need to find someone with the needed skills & tools to dig into repairing your logic boards backlight circuit. This is beyond most DIY and you would still need to find the needed parts which can be tough.
过去 24 小时: 1
过去 7 天: 1
过去 30 天: 2
总计 950
3条评论
Using a flashlight can you see the faint image of your desktop icons? You'll need to hold the flashlight at a sharp angle resting on the screen to see.
You might also want to check things using an external monitor as well.
Let us know what you find!
由 Dan 完成的
Yeah, I can see the desktop icons with A flaslight. Will try with an external monitor
由 Mattis 完成的
Sadly, Dan is completely wrong. It doesn't imply there's a problem with the board at all. The problem is within the screen. How do I know? Because I've replaced a few and there's never been a board problem yet.
What I need to find out is if it's possible to refit a backlight from one with a broken glass onto one with the backlight problem. I have both in stock now.
由 Baggy cat 完成的