I have found over the years that some playfield circuits contained too many
lamps for the rated fuse amperage. This occurred on "8 Ball Deluxe" and
several early Stern solid state games. As a result, the fuse melted over
time and often cooked the fuse holder as well. If you run across this
problem on any game, use #47 in place of #44 (the #47 draws 0.15 amp
vs. 0.25 amp for each #44.) For the wedge bulbs, use #259 in place of #555,
as #259 also draws less current. In most cases these bulb options cost a
little more, but solves the problem.