Repair starts at 7:53 I purchased a non-working Sega Mega Jet and bumbled my way into a repair. I edited a good chunk of senseless troubleshooting out but it's still a long video, as most of my videos are.
If the voltage of the fuse is higher then the stock one itll take longer for it to blow. And with that it could burn out the board. At this point you are just making a connection either way. If you measure the resistance on the working one. You can match the ohms on that fuse with another one to get as close as possible. Most fuses have documentation for resistance. Good luck mang.