Chosen Solution
I replaced my display. Following the instructions on ifixit. Prior to doing this the keyboard worked fine. Now 5,t,g, and b dont work as well as other keys at random times. The “e” key is sticking on. What could i have damaged? I only changed the display connections (wifi,camera, and display). Otherwise i disconnected the battery. Any ideas? Update (05/31/2018) From BeetsTech, it’s a refurbished display MacBook Pro retina A1502 Complete display assembly 13.3” Apple P/N 661-02360 (mf839, mf841, mf843)
OK, thats the correct part. It sounds like the iSight camera is messed up. Do you still have the old display assembly: if you do plug in the iSight cable from it. Did that fix the issue? If so you’ll need to get a replacement. Update (07/15/2019) Clearly the keyboard is also in trouble. Did you have a spill or did you get some solvent leaked into the keyboard damaging it if you also replaced the battery
