Complete disassembly and installation guides for most recent Mac laptops and consumer desktops.

27456 Questions View all

do we need to replace logic board to get backlight

I have a problem with my macbook 13 inch late 2007 model. My display used to work fine but after replacing my broken lcd, i often lost back light but when i adjust the screen by moving it back and forth , my back light used to come. but now i lost my back light completely. i sent it to repair company but the said that it would cost $499 to repair it coz they say that my logic board has a problem. but my mac works fine and i have problem with back light only. can u suggest me anything

Answered! View the answer I have this problem too

Is this a good question?

Score 0
Add a comment

2 Answers

Chosen Solution

In this case, connecting to an external monitor wont give a big clue about the problem. It's clearly a lightning issue, not a video issue. To those who are reading this, be aware that when you loose the backlight while you're moving the laptop lid up and down it means that your inverter cable has a problem. Can be a loose connection to the sockets (to the logic board or to the inverter board) or a damaged inverter cable. When you have this lightning behavior don't wait too long before checking the contacts or replacing the inverter cable because if the cable cut in the hinge and short there it will cost you a logic board instead of a cheap inverter cable. I think that's what happened to goutham. If there's no voltage at the inverter socket output on the logic board then the logic board is probably faulty (shorted) before the socket.

Was this answer helpful?

Score 2
Add a comment

Please hook it up to an external monitor to eliminate the logic board and GPU.

Was this answer helpful?

Score 1
Add a comment

Add your answer

goutham will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 1

All Time: 369