Chosen Solution
TLDR:
(click to view full img) The issue is after the back light has been burnt, I need to weld them to alternative point by jumpping wire. Am I linked the cable order correct? or incorrect in some links like the graph showing below? (Also I am not confident for 1-10, the link 5 maybe also wrong since it does say ‘not connected‘ in the boardview.) Long story: I splitted a cup of water on the top left corner and watched the screen flashed into white and going off in under 0.1s. I think the screen may burnt. After checking the logic board I found the burt area like the image shows, the two red line area is together the back light. So until now I only can try to weld them to an alternative point, if it does not work it means the screen is burnt as well: It is no worth to repair if so.
Not sure why you are trying to emulate the LVDS cable instead of just replacing it! 13” MacBook/Pro LVDS Display Cable, Apple P/N 661-4820 and here’s the logic board connector LVDS Display Connector (30-pin) I would first start off replacing it, hopefully you haven’t shorted out any of the lines are you could damage the logic board. If you damaged the logic board connector you can replace it
