1 No backlight troubleshooting help!
Hi guys I am looking for a little advice!
So I purchased a MacBook Pro 15” A1286 Mid 2009 which was very beaten up and the backlight didn’t work.
The first thing I did was disassemble the laptop, removed the glass (previously done and gorilla glued back on!) and screen and check the LVDS cable.
I could see two damaged pins on the cable (logic board side) so I ordered a new one which I tried yesterday. Unfortunately, I still get no backlight which was really disappointing!
What are my next steps? I don’t want to buy a new screen assembly if its the connector on the logic board. And I don’t want to replace that connector if its the screen itself!
I am pretty much at my budget for this project, having also replaced the keyboard and SSD so I wanted a little advice.
What checks can I do to really narrow down the problem once and for all?
To add to that, I tested the voltage on the backlight fuse to ground, one side was 12v, the other was nothing.
I saw a post that said to bridge it with tweezers to see if the light came on. All I got was a puff of smoke from the board and the fuse blew / blew even more!
Everything else seems to be working, still getting LCD working, just no backlight.
So now I have a 100% dead fuse, and I’m non the wiser! What can I do?? :(
Cheers guys
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@akiwi92 for now you definitely want to stop applying jumpers to components :-) Post some good pictures of your logic board (both sides) as well as the LVDS connector from your LCD (both sides) with your question. Let us see what the display connector looks like as well as the area around your LED driver. Hope you got a couple of more fuses since you may need those. Did you try to power it on with your LCD disconnected? Adding images to an existing question In ohm mode, what does your multimeter display when you place the red probe on the broken part of the fuse (that originally did not show power) and the black probe to a good ground?
из oldturkey03