Most likely the power control board needs to be rebuilt. This is very common. The bridge rectifiers are over 30 years old now and were only meant to last about 10. If you can solder this is not a difficult board to repair. You can buy a kit with all the parts from http://www.bigdaddy-enterprises.com/ for about $16. Look under power supplies and choose the kit for the power board your game uses. Recommend you replace the connectors too.

Or you can buy a new board from www.pin-logic.com.

If you buy a new board don't throw away the old one. It is probably still good and can be repaired.

The main line fuse should be an 8A and if the varister was shot I thought the game would not get any power.

You are right Craigmack. Look inside the lower cabinet, in the back left should be a nice red disk shaped varister over a small silver box. This is where the power cord comes in from the wall. If it looks burnt, that is your problem.

http://www.marcospecialties.com/product.asp?ic=5017-09044-00

When I blew a varister the game would not even turn on but I think the line filter was shot too.
Hopefully this is the problem as it is an easy and cheap fix.

Those connectors aren't slightly burnt, they are burnt. Need to be replaced along with the pins. Those burnt pins are the GI lighting power and return lines. Are you using #47 bulbs in the GI?
Note, this should have nothing to do with the fuse problem.

The power comes in thru the power cord, thru the varister and line filter, into J2 connector pins 6 and 7, thru the Fuse F6, to the tranformer. If F6 immediately blows you have a short in the main 110 volt AC power circuit. Check the varistor and the line filter in the cabinet.

So either the plug, cord, varister or filter are bad.