2ds screen looks discolored

So i disassembled my 2ds to clean the d-pad contacts and change the stick but when i put it all back up together it turns off with a pop
so i check the ribbon cables and it turns on for a second before shutting down again with the screen active for a couple of seconds
i check the ribbon cables again and it works but the screen looks totally discolored
i cleaned the contacts of the ribbon cables and the ribbon cables themselves but nothing changes
any advice ?
here's some pics of its current state