Hiya TRider
When you say "just quit" - you mean NOTHING - so with electric start, it doesn't even turn over?
If so, it's not due to the sidestand being down, or carb flooding - because for those, using electric start it cranks over all right, but won't start.
If not - the kill switch is possible - when mine is flicked, she won't crank over.
Do the lights work once key turned on? If not, check you haven't just had a battery lead come loose...
If so, maybe a fuse, as you say.
Let us know!
Biddy