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I have a 13" MacBook pro 2009 model, and I tested my screen with a flash light and get video, but no backlight. And from looking at the board I was made aware that the fuse either has a white dot or a "P" on it, but I can see that on any brown fuse near the lvds connector, can someone give me an idea of exactly where it is, there are a lot of fuses. My boards emc is 2326 its a 2.26GHZ board.
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Michael, the fuse is a 2 AMP-32V 0402-HF SMD fuse, and something like this should work for your board. The WLED driver is a LP8543 made by TI. the datasheet is available right here. Mouser.com as well as Digikey.com should have both parts available. Hope this helps,good luck.
Michael, you are missing the fuse altogether. It appears as so the solder pads (red arrow) are the only thing left. Also check the traces on the board (turquoise rectangle). It may just be the image, or my eyesight, but it appears as so there is a disruption in those traces. Your serial number also did not give me anything like a Macbook Pro. Hope this helps.
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According to the pic, I don't have a fuse in that spot, and when I added a fuse that I got from ebay, I still get no backlight. Are you sure it couldn't be in a different spot on my board, if I upload a close up picture can you help me out a little more?
Michael go ahead and post a High res image of your board. Also give us the last three digits of your serial number, this will help to further identify your board. This guide Adding images to an existing answer shows how to add images. On your image point out where you "added a fuse that I got from ebay"
6GCA is the last 3 digits. The EMC is 2326. I will upload the pic in a few, where you see the solder look like a stain or sort and not factory, that's where I had the fuse.
Thank you for the info, there was nothing in that spot when I got the system, I know it gets video to the screen, I tried putting a backlight fuse in the spot you mentioned, The thing is, when I got the system, the solder looked liked a fuse was never there. That's why I was wondering if it's suppose to be in a different spot. Is there any other info I can provide you to help with seeing if a fuse really goes there or somewhere else? I also heard it could be the WLED driver, and I have the solder skills to remove it and put fresh solder on those pads, but I just don't want to touch it if I don't need to, can you shed any light on this?
The schematic and the board layout diagram for your board are showing that the fuse is supposed to be exactly on that spot, there is no other info that I have. Has the backlight ever worked for you? Yes it can be the WLED driver. Replace the fuse, measure the voltage on the fuse and see if you even get power to it.
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