Quoted from Darcy:

Unplug the game. Slide off the plastic cover. Carefully use a small needle nose pliers. Try to grab the center of the electrode part, carefully twist the bulb and pull, (just the playfield lights). Unless it is stuck with some old soda, or beer, the base of the bulb should come out.

Quoted from The--Who:

The only coin slot that works and takes quarters is the far left one. I think I'll get three quarter plates and figure out a way to block the opening on the other two. I looked at those one and two slot plates, but I really don't want to spend that much on something I can rig up alot cheaper. If I get the correct one lit at least the grandkids may figure it out.