Had a New Holland that would up and die after starting, replaced the fuel solenoid and relay from a working unit, checked wiring and fuses, one evening as it was getting dark I still had about 10 minutes left before punch out, I jumped in the unit and fired it up, and caught a flash of light in the fuse panel and the unit died, I restarted it a couple of times and watched it do over and over, replaced the fuse and put it back in service, I cut the plastic off the ATC 5 amp fuse and it was cracked down in the bend, I guess it had just enough resistance to heat a little and open the crack enough to break contact, then close and test good.