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I recently got my Macintosh Classic up and going again after recapping (analogue + logic). It passes the Apple Personal Diagnostics tests on the long RAM test, logic board test, and floppy test. It has it's original 40MB SCSI drive, and already had Sys 7.0.1 on it that worked just fine. I wanted...

Hello, I've picked up a Macintosh SE that was said to have a broken CRT, and did not power on at all. Indeed if I powered it on with everything connected, the 5V rail seemed dead and only 0.5V was on the +12V rail. Since I had them on hand, I replaced all the electrolytic caps on the analog...

Is there a compatible chip? I see it's Motorola branded, and I've found other ICs from them that were RTCs + SRAM. If not, I'll try the trading post here seeing if someone has a spare.  As well, do you know what the screen should look like without the ROM installed? Should it be blank, or...

Ah that's good to know then, I wasn't sure if that was an extra ROM for the built in System 6. I'm wondering if I've just killed the ROM and it's resulting in garbage on the bus, hence the garbled screen with it in. I can't seem to find replacements, so will try an find an EPROM that's pin...

Hello, I'm repairing a Macintosh Classic I picked up with battery damage. When I received it, it was totally dead (0V from the power supply on all rails), and it's battery had leaked on it's board. It has it's original SCSI drive and RAM expansion card with dual SIMMs.  I've since repaired it's...