On 12/31/22 11:43, Steve Platz via cctalk wrote: > I recently got an Osborne 1a, which needed a lot of cleaning and had probably > been stored in a barn for some time. After getting the drive parts to move > freely again and removing a blown cap on the power supply, the machine will > start up and the screen is green, although it's just showing some random > characters. I understand from someone's advice that some RAM may have gone > bad. At this point I'm not sure if I should continue to try to get this > going, or just resign it to someone with better resources for diagnosing the > issues. If anyone has some advice for moving forward with this, I'd be > interested to listen. Some context: this is my first such restoration > endeavor. Thanks - Steve > You're actually pretty far along, as opposed to having a brick. Because of the storage conditions, do clean any sockets and contacts to see if some of the problems can be resolved. Bad RAM on a system this old isn't unusual. Schematics are on Bitsavers.org.
Cheers, Chuck
