To fix the Gameboy burn-in screen I need to remove the burn polarizing filter and replace It with a new one. A sharp blade can be used to get the start, but the filter will peel off by hand. Some of the glue will stay on the screen. I removed it with Isopropyl alcohol.
This type of damage on the screen is called screen burn. it means the polarizer filter on the screen has been damaged. Usually by sunlight.
So, I have to send the screen to a place specializing in changing its polarizing filter.
The GamrBoy is the 3rd most sold console of all time after the Nintendo DS and The PlayStation 2
game Pokémon Gold
GBC
I also removed the yellowing from the plastic shell which was supposed to be colorless. For this, I used the same retro lighting method as always.