I think that is the problem Marty. It has a nice big black burn mark in the middle. Will have to replace it.

OK, refer to the manual as to the correct fuse type and NEVER overfuse them.

Fuses blow for a reason (generally).  If the magnets stay on for too long it can cause the fuse to blow (either in test mode or game play), or the accelerator board for the SC may have an issue.
The fuse will have to be replaced either way.

RTBB here has a great selection and super quick postage too.  Always handy to have a few spares floating around.

I'll wait for those with superior knowledge than I to assist with this too.

FYI with fuses, a visual check is not always the best way to go - but a big arse burn mark is a good sign.  Good practise to check with a multimeter with it out of machine.