Turn a home game off when not playing
Displays have a life set by their hours on, GI wiring and connectors suffer, bulbs burn out, fans and transformers pull in dust, and lamp heat warps plastics and can lift backglass paint. Switch home games off between sessions.
Systems
Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part One, Clay Harrell (pinrepair.com)