Chosen Solution
Macbook air 13" A1502 emc 2835 I had a broken screen. Could still see picture a bit not really applicable to do work so I had to fix it, keyboard lit….etc. After top assembly replacement no picture, no keyboard light. I made sure before I unplugged any connections I powered down machine, unplugged device, and disconnected battery. I even tried connecting old assembly back to see if it was a malfunction with new part but still no picture or keyboard light. This repair is pretty straightforward. Is there anything I can try?
Hook it up to an external monitor to see if the GPU is generating a signal first. Then go through the installation again making sure of the LDVS cable connection to the logic board. Then reset the PRAM: P,R, Command & Option keys on restart. Let it tone three times. MacBook Air 13" Early 2015 Display Assembly Replacement
