Just as the title says. I have a Macintosh IIci that blows its fuse as soon as it gets power. This is definitely a PSU problem, as the logic board boots fine with the working PSU from my IIcx. Unfortunately, from what I understand, this PSU is the less reliable non-ASTEC (614-0009) variety. My IIcx and other IIci both have ASTEC supplies, so it's not like I can swap parts or compare readings between them.
Replacements are over $100 on eBay, so I'd like to fix the one I've got. The problem is, I don't have a lot to go on when it comes to symptoms. The thing was working fine for months (likely years before I got it) and then it just blew its fuse (and every other fuse I trie to put into it). I tried a partial recap, but haven't sourced all that I need yet. However, I don't think that's the issue. Only one of the capacitors showed any sign of leaking (1000mf 16v). and replacing it and the others I had didn't make a difference either. Besides, as I understand it, the fuse is on the high-voltage side, where the one questionable cap I found was on the low side.
Side notes: Yes I've already recapped the logic boards on all three machines. And as mentioned, all boards boot.
As for my problem machine… Any ideas?
Replacements are over $100 on eBay, so I'd like to fix the one I've got. The problem is, I don't have a lot to go on when it comes to symptoms. The thing was working fine for months (likely years before I got it) and then it just blew its fuse (and every other fuse I trie to put into it). I tried a partial recap, but haven't sourced all that I need yet. However, I don't think that's the issue. Only one of the capacitors showed any sign of leaking (1000mf 16v). and replacing it and the others I had didn't make a difference either. Besides, as I understand it, the fuse is on the high-voltage side, where the one questionable cap I found was on the low side.
Side notes: Yes I've already recapped the logic boards on all three machines. And as mentioned, all boards boot.
As for my problem machine… Any ideas?
