Chosen Solution
Replaced battery and wireless charging coil, now my display turns on and off every ten seconds. The display has a bunch of green lines and rectangles before turning off. What could this be? Should I replace the display now as well?
You could have damaged the display or flats during disassembly. Try to reassemble it again and reseat all the flats in the proper way before connect the battery again. Hope it will solve otherwise, a known working display assembly to try on, could help to understand if the original display is definately trash or not.
