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I attempted to test an LC last night since it appeared fairly clean and I didn't see cap goo on the logic board.  I powered it on, floppy drive made some noise, but there was no startup chime. Powered down, tried reseating the speaker/fan assembly (this is an early LC with the fan and speaker in...

My Mac Portable's battery wiring harness looks like somebody tried to put on a new connector but didn't have the right tools so they just haphazardly twisted wires together and taped them.  I have 9V connectors and want to fix this the right way, but when looking at a picture of an apparently...

I recently bought a nonworking Mac Portable as a restoration project, and the first thing I decided to do was replace the battery.  I know some people have had luck using off the shelf rectangular 6V lead-acid batteries and modifying the Portable's battery holder, but since the original cells...

The MR824 diode that is a recommended replacement for the GI854s used at CR1 and CR5 on compact Mac analog boards appears to be discontinued, does anyone here know of a suitable replacement?  To me it looks like Vishay EGP50G-E3/54 might be a suitable replacement (see datasheet at...

I'm repairing a 512k with video issues for somebody, and when I disassembled the machine to get at the analog board, I discovered that the white plastic shield with the adjustment labels on it was held on with double-sided tape rather than the usual plastic push pins.  Has anyone seen this...

I'm not sure how many people here are familiar with the demoscene, but the basic idea is: some programmers want to show off their mad programming skills and/or how good their hardware is, so they write a "demo," a graphics/sound program. PC demos are everywhere and tend to have some pretty...

So, I've recently discovered that Carnegie Mellon's computer club owns a Lisa 2/10 (unfortunately with Mac XL mods). I'm trying to get this machine operable again, but we want to bench-test the power supply before we attempt to boot the machine with it. Does anyone here know the pinout for the...

I have decided to use my Mac SE as a recipe box in my kitchen (Before I receive any death threats: I mean I'm storing recipes on the computer, I have no intent of gutting a Mac and filling it with paper recipe cards), but it needs some repairs. The repairs I can do, but I don't know a good...

I may be able to obtain a logic board from a 600 MHz G3 iMac cheaply. Can this be put into my 400 MHz iMac? If so, what (if any) modifications are necessary to do so? Thanks.