Pinball update

On Saturday, a friend of mine came over and helped me replace a couple resistors and diodes on my pinball machine. Now all I need is to find a 1/4 amp, 250 volt slow-blow fuse and the displays on the machine SHOULD work. (I hope!) I went out to Radio Shack and a few other stores looking for the fuse but I couldn't find one. I bought a couple buss fuses instead of slow-blows and when I powered on the machine, it just blew them as soon as power got to them. I guess I really need those slow-blows!