No picture or backlight
Hi
I got a Macbook Air, which had both hinges broken, I powered on the laptop, and the screen worked fine, although only laying flat on the couch.
https://i.imgur.com/4RHec7C.jpg
I moved the screen a little, and the screen went white. After that I have not been able to get a picture from the screen.
No backlight, and no picture.
I have changed the hinge/LCD-cable and still no reaction from the screen. The laptop itself chimes when starting up etc.
What could be the problem?
I’m very, very new to the whole “micro-soldering” etc. But I want to learn it, and I’m not stupid (Not that stupid anyway). I have googled plenty, yet I’m not that great at analyzing, tracing. Basically I don’t know what I should look for.
I’ve got access to both the schematics and the boardview, for easier diagnostics, but I can only locate the issue to a limited extend.
- I got 0 volts on pin 3/4 on the LCD connector.
- Voltage is fine on both sides of the (F7700) fuse.
Although I only get a voltage-reading on 3,4 and 5 on Q7706 - Pretty much the rest in that entire area gives me 0 readings.
https://i.imgur.com/vpOgHAv.jpg
https://i.imgur.com/MYt9n1n.jpg
Can someone help out a newbie?
Thank you!
-Andy
좋은 질문 입니까?