I know this isn't a "real" restoration, but I did rescue a very disused Pac-Man cocktail from the claws of time.
This one obviously had bees and mice living in it at different points during it's lifetime, and possibly some kittens. Thankfully the glass is intact (scratched, though) and there's no water damage. Most of the games I find here in the south have water or humidity damage. It seems you can't leave a particleboard box stored in a non-climate-controlled area in Georgia for very long.
The monitor was very burned and missing the electronics, and the board comes up with garbage on the screen, so it got turned into a MAME cabinet.
There is something very different about running the vertical monitor with the original controls and the "sound of the cabinet" that is a very different tactile experience. It allows me to go back in time to some long lost 1983 pizza parlor and forget that it's a computer running emulation.
I think it's mostly the sound of the game coming *from* the cabinet and the vertical monitor that allows reality to be lifted. Plus, it's enraging to play games that used 4-way joysticks with an 8-way or a PC joystick. Since these are original leaf-switch 4-ways, it makes those old games *much* more playable.
I did drill a couple of holes in the side of the control panel on each player's side for two buttons, rather than ruin the original Pac-Man overlay. It works out better anyway because it would have been crowded near the joystick.
The graphics on the top glass were pretty much chipped off completely, so I'll order a new 'Multicade' underlay from arcadeshop.com. I'd like the original Pac-Man, but they seem to be very expensive due to licensing.
Also, there is rust on most of the metal parts such as the coin door, the piano hinge, and rivets in various places such as the control panel. Any good way to clean them or should I remove and replace it all?