Hey Everyone,
I noticed some dead vertical lines on a Game Boy that I had backlit and intended to sell. After opening it up and going through the usual procedure to fix the vertical lines the columns remained and were still there after a few days. Luckily I sold it on as faulty, but wondered if this was due to fixing the lines with the backlight installed.
This has never happened before and I have never attempted to fix lines with one installed. Any tips/ pointers. Thanks