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Hi there, I'm trying to track down an odd issue on a PB100. It's been recapped and cleaned (LCD and inverter too) and works flawlessly at first, but after it's been on for an hour or two any open windows start turning black like this: If i move or close the windows it lightens up in that area...

A while ago I picked up this Macintosh 128K (Original repair thread above), and it turned out to be a HyperDrive 20 equipped system with a 512Ke board. After repairs the board was functional, but mine was missing both the hard drive and the power supply, and trying to find an original compatible...

Hello there - I recently tried installing 7.5.5 on my SE/30, and after 23 something floppies it installed just fine. Everything works correctly on it, but I noticed if I use the Shutdown or Restart options in Finder it bombs with just "bus error". The restart button on that message works just...

I picked up a rather interesting 128K and it finally showed up this week. It's quite an early one as it just has a Macintosh badge instead of the later 128K/512K ones, but was upgraded with a HyperDrive 20 rev 2 and 512K board. I've been trying to get it working, and after patching it's analog...

Hello, just wanted to share I've uploaded the v2.1 ROMs for the Radius 16/25 accelerator for the SE. I've not found another copy online, so hopefully this helps someone who wants to run Sys 7.1/7.0 on their SE with Radius card. ...

I recently picked up an LC that had a TDK power supply with lots of leaky caps. When powered on one of the big TO220 diodes would get red hot. The back side of the power supply is all black as well, presumably from being run when shorted. I've replaced all the caps, resoldered all the joints on...

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...

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...