Chosen Solution
Hello, I ’ve been having this issue since yesterday, when my isight camera stopped working, resetting the SMC and PRAM did not help, so I tried disconnecting the iSight cable, but unfortunately (that is what i think where i screwed it) also the screen LVDS cable. Afterwards, My Mac booted, but no display visible. In “displays” in preferences, there is like this “built-in monitor” and also, when I put light source behind this mac, I can see parts of screen, so there is probably problem with the backlight. Since only thing I am capable of doing in terms of “digging in mac” is replacing the hard drive, I am afraid soldering and stuff would be kind of another world task for me. I ordered a new LVDS cable, but it hasn’t arrived yet. Putting some pictures of MB, please could you check it out, and let me know what may be wrong in there? Appreciate any other ideas.
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Check the LVDS cable to see if you have chipped any pins. Measure continuity on the backlight fuse (brown fuse with “P” on, in your picture) using a multimeter, with power disconnected. It is very likely to need logic board repair, and the LVDS cable is not a simple swap (need to remove the glass to get access to this), so it may be worth sending it somewhere local to you if you are afraid of damaging the MacBook further. I can give you an indication of areas to measure, but it will be a waste of time if you will not attempt to fix it.
