MJE15031 - Mouser had all the rest, but that was backordered it seems.
Quoted from frunch:If the fuse still blows after rebuilding the HV section...well honestly there doesn't appear to be too much else that will blow the fuse. As it is, it's blowing the fuse even with the power disconnected from the master display board, right? If so, that would seem to rule out the displays and master display board... Leaving only the HV section on the power supply as the likely source of the bad component(s) blowing the fuse.
Mof: i agree with you 100%, circuit breaker is definitely the best choice when applicable. However, the fuse he's dealing with here is 1/4 amp--and i can't find any circuit breakers smaller than 1 amp. If you know anywhere we can get 1/4 amp circuit breakers, please let us know!
Okay, makes sense. I've got 4 more fuses (and can get more). For now, I'll wait until I rebuild that HV section before bothering to try another. Would it be worth disconnecting everything aside from incoming power to the HV section and trying a fuse in there to see if it blows? Based on what you're saying, there's no sense in that, so I think I just hold off.
Going back to my original Solenoid fuse issue, I find it interesting that it stopped blowing after I installed the "fuse saver" board. Then again, I did improve the ground connection area in the backbox (wasn't making great contact) as well, and did a little clean-up on some other stuff. I guess any number of the little things I did may have fixed whatever was blowing that original Solenoid fuse. Don't look a gift horse in the mouth I guess.
I'm basically in a holding pattern for the moment - I hate waiting, but hey, I can do some cosmetic work in the mean time. I also have a guy here in town that wants me to go look at his Stellar Wars, and since it's similar to Firepower II in some ways, maybe I can use some of what you guys have shown me to figure out his issue.