Huge difference in the before and after pics Nick. What a difference a simple clean makes. Great pick up.
Sure is - I used my mobile for the pics - despite the reasonable camera in it, the shots are nowhere near as good as the stand alone digital, so I will go back to that (despite how convenient the phone is). It looks nicer in the flesh than the shots suggest.
I've seen that a LOT.. mostly on Data East pins but can't say i've seen it on that style of fuse holder.
Possibly they were losing tension and getting hot i guess
Yes, Capcom fuse holders are really good, so I can't figure it out. But heat is a good thought. never mind though - got a brand new board coming from Greg at RTBB next week.