The Game Boy released on April 21, 1989 in Japan, followed by North America on July 31, 1989, and lastly in Europe on September 28, 1990. It is characterized by a large grey casing and model number DMG-01.
I have a an original 1989 Gameboy that has horizontal lines and I just wanted to know the most common fix iv seen some videos of vertical line fix just not horizontal lines fix please help