Okay, im back with a new problem 
i recently posted a thread about a macbook pro that turned on and worked in every way but did not have an image on the screen at all, even when i shined a light on the screen, no picture at all.
With a much closer examination of the board with a flash light and magnifying glass, i notices 2 pins on the lvds connector on the board were black, strange how i didnt notice before, but anyway, i scrubbed the connector with alcohol and scrapped them with a small metal tool and was able to remove most of the black, whatever it was on the pins, (i thought they were burned but idk)
anyway, i got picture now, so whatever i did, im making progress.
But now the issue is i have no backlight. Ive been searching online and again, there appear to be no simple solutions. I have already tried to replace the led screen and lvds cable again but the same issue with the other screen which i know is good.
So i think maybe a fuse has blown, or perhaps the wled driver chip has muffed up on me. im not scared to work on my mobo, but, i dont know where what im working on is located. Does anyone know where i can get a schematic? or detailed pictures pointing out parts?
Also, i want to use my dmm to test the pins on the chip and to test the fuse when i find it, but ive never used my dmm to do this before. This may seem like a stupid question, but does the macbook have to be on in order for me to use my dmm to test the components?
Im not worried about using my heatgun and soldering iron on a board thats not operating, but i am concerned about touching metal contacts on the board flowing with electricity and blowing components up and making this very salvageable motherboard unusable.
(i just dont want to pay 500 dollars for a new board, can you blame me?)
Thanks, any help is appreciated.
Ohhh, and before anyone asks, the macbook wasnt under warranty, since i see many people call others idiots for working on their own equipment..
And im not going to pay apple to repair it either. Im decent at repairs, this is just something newish to me. I want to get to the component level of repairs, replacing resistors and capacitors and chips on laptops instead of desktops and monitors.
i recently posted a thread about a macbook pro that turned on and worked in every way but did not have an image on the screen at all, even when i shined a light on the screen, no picture at all.
With a much closer examination of the board with a flash light and magnifying glass, i notices 2 pins on the lvds connector on the board were black, strange how i didnt notice before, but anyway, i scrubbed the connector with alcohol and scrapped them with a small metal tool and was able to remove most of the black, whatever it was on the pins, (i thought they were burned but idk)
anyway, i got picture now, so whatever i did, im making progress.
But now the issue is i have no backlight. Ive been searching online and again, there appear to be no simple solutions. I have already tried to replace the led screen and lvds cable again but the same issue with the other screen which i know is good.
So i think maybe a fuse has blown, or perhaps the wled driver chip has muffed up on me. im not scared to work on my mobo, but, i dont know where what im working on is located. Does anyone know where i can get a schematic? or detailed pictures pointing out parts?
Also, i want to use my dmm to test the pins on the chip and to test the fuse when i find it, but ive never used my dmm to do this before. This may seem like a stupid question, but does the macbook have to be on in order for me to use my dmm to test the components?
Im not worried about using my heatgun and soldering iron on a board thats not operating, but i am concerned about touching metal contacts on the board flowing with electricity and blowing components up and making this very salvageable motherboard unusable.
(i just dont want to pay 500 dollars for a new board, can you blame me?)
Thanks, any help is appreciated.
Ohhh, and before anyone asks, the macbook wasnt under warranty, since i see many people call others idiots for working on their own equipment..
And im not going to pay apple to repair it either. Im decent at repairs, this is just something newish to me. I want to get to the component level of repairs, replacing resistors and capacitors and chips on laptops instead of desktops and monitors.