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Yes I think the RIFA caps just crack with lots of use. In my other board, which has clearly been used very little in comparison (it had barely any soot and dust) they are still looking fine. But while these white RIFAs don't seem to let go in the same way as the older yellow ones, I still think...

I've had a look around but I haven't been able to find a conclusive answer. I have a couple of Mac Classic analog boards, one of the older version (820-0395) and one of the newer (820-0525). They both contain a set of two RIFA PME 290 MB caps, and on the newer board they are cracking at the top...

Hello! Did you fix your issue? My newly-recapped analog board is exhibiting something similar – it also makes a similar noise (possibly from the flyback), and it also restarts itself, but so far only when a certain hard disk from an IIsi is plugged in, which makes me think that this disk draws...

Ok so the good news is that it's alive! As I mentioned, I had blown the fuse – which actually turned out to be more than that, as the TDA4605 and IRFBC40 were also dead. I think I accidentally shorted the chip while testing for the voltages. Luckily I had plenty of spares. Since I had my...

Hmm, DP1 was already changed (it tested ok out of the board but I swapped it anyway). I will check the voltages once the new fuses are in as I accidentally blew it :D

The board looks pretty good. It came out of a Classic that was already very clean inside, almost no soot on the CRT or board, suggesting to me that it wasn't used much. There is only the familiar 'pitting' of one trace on the back (between DP8 and CP9) but it still measures as connected. The cap...

Yes, good one - I have tested it with the logic board both attached and not attached, as well as a hard disk. Same results unfortunately.

Hello! I have a Mac Classic that refuses to start up. I received it after being battery bombed, and have purchased a new logic board, but before that can be installed I want to make sure that the AB is behaving. I have changed every electrolytic cap the board, as there were some signs of...