These are neat machines, if a bit crippled by Apple. Do yourself a favor and immediately replace the PRAM battery. They're notorious for surface mount caps leaking in the motherboard, which is the "furriness" that you're seeing. The power supplies need a load to run. If you really do need a new power supply, any of the ones from an LC-LC3 series will fit. They're still fairly inexpensive. Edit: Yeah, you need a new PS. The board needs a recap before you run it much more, lest you damage things. These machines were heavily used in the US in classrooms. They were frequently fitted with an Apple-II card and disk drives so schools could use their 20+ year investment in Apple II software. You can also find Network cards and occasionally CPU cards.
@@StevesTechShed Looking at the schematic for the LC, it appears that the -5V is used by the two AM26LS30 differential line drivers that support the RS-422 for the Appletalk. So no networking between 68K macs without it.
These are neat machines, if a bit crippled by Apple. Do yourself a favor and immediately replace the PRAM battery. They're notorious for surface mount caps leaking in the motherboard, which is the "furriness" that you're seeing. The power supplies need a load to run. If you really do need a new power supply, any of the ones from an LC-LC3 series will fit. They're still fairly inexpensive.
Edit: Yeah, you need a new PS. The board needs a recap before you run it much more, lest you damage things. These machines were heavily used in the US in classrooms. They were frequently fitted with an Apple-II card and disk drives so schools could use their 20+ year investment in Apple II software. You can also find Network cards and occasionally CPU cards.
Yeah I will be cleaning up the motherboard and replacing those caps shortly! Thanks for watching :)
@@StevesTechShed Looking at the schematic for the LC, it appears that the -5V is used by the two AM26LS30 differential line drivers that support the RS-422 for the Appletalk. So no networking between 68K macs without it.
That's fine I don't own any other 68k Macs :)
@@StevesTechShed That's what I used to say too... 🙂
You are very brave around that huge cap on the PS. Obviously you've never been thrown over the chair by 300vdc before.