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Quick repair: Pravetz 8D
Recently we found another Pravetz 8D on auction for a good price and in good condition. No matter that we have a few units in our collection, we decided to save this one as well. You can never have too many Pravetz computers. 🙂 On first sight the unit was in mint condition, even the…

A “COMPANION” in our collection
During soviet times many computer clones were created, most of them were manufactured in Bulgaria and then exported to the USSR. But many other computers were made inside the USSR, mainly ZX Spectrum clones. In our example, the computer is manufactured from the beginning of the end of the USSR to until 1995. “Компаньо́н 2”…

A mouse for our 520 STFM
After searching for a long time, we finally found a compatible mouse for our ATARI 520STFM on the web. We bought it for 25BGN, which is quite cheap. To our amazement it works. Lets take it apart to look inside and clean it.

REPAIR GUIDE: Commodore 64 with a common problem
Recently a friend of the museum sent us his breadbin Commodore 64 that he acquired online with complains that there is garbage on the screen and there is no cursor. As much as we like restoring vintage computers and dealing with newer problems that enrich our knowledge base, we have never actually repaired a breadbin…

IZOT CM1604 M3 restoration – part 1
The time has finally come to take a look at the other terminal we acquired in our last haul from a local factory here in our town. CM1604 M3 is the third revision of the computer terminals manufactured in 1985 by ZZU – Veliko Tarnovo and sold by the brand “IZOT” here in Bulgaria. The system is a…

PRAVETZ 8A – restoration and cleaning
After long years of searching, we finally acquired not one but two very well-preserved computers. Pravetz 8A is considered to be one the rare models here in Bulgaria, mostly because most of them were exported to the USSR. Also, they were not sold freely here, only certain institutions had access to owning them. Although it…