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I've got a Centris 610 logic board that I recently recapped. I replaced all the leaking electrolytic caps with tantalums. It is working, mostly, though seems to exhibit some instability. I do notice that I don't get much for voltage across C50. Can anyone confirm if there is a DC voltage across...

Hi all, I'm troubleshooting a non-working 804av. The board was previously re-capped, but currently isn't giving a startup chime or doing much of anything when power is applied.  Not sure if it is related or not, but the ATECS chip isn't providing any clock to the PSC. Digging further, it looks...

So, I found a guy who had some old Mac software he wanted to get rid of. Most of it was from the mid-90's, but he had a few older titles including Sim City and Hacker II in original boxes. The Sim City disk appears to work just fine, but the copy of Hacker II seems no good. I just get the...

Hi, I just picked up a Mac 128K with a Mac Rescue upgrade installed. From what I understand, this upgrade adds a SCSI port, allows up to 4MB of RAM, AND supposedly provides up to a 2MB RAM disk. The original 64K ROMs have been swapped out for 128K ROMs, and the internal floppy has been...