Originally Posted by Neil35

Your problem and your solution are neither new nor unique.

Several years ago I read on this forum about the TV screen turning itself on during the flight that sometimes turned itself off but sometimes didn't. At the time people's solution was to tape a piece of cardbord to cover the entire screen area. I took that advice and have been keeping a piece of tailor-made cardboard and a few strips of very sticky tape in my backpack. Over the years I have found this setup very handy when travelling on sCO planes.

Unfortunately I still don't have a good solution for the flickering light coming from neighboring screens either. Naturally I reach my sleep mask as my plan B when that becomes too bothersome.