(This was originally posted to Twitter on February 3, 2015.) February 3, 2015 Today, I’m going to tackle this new-to-me Commodore SX-64 computer. I bought it cheaply from a seller that said it wasn’t working. It has a few faults that we’ll take a look, including the keyboard which has a few unresponsive keys.
Category Archives: Commodore 64
Another Visit to The Computer Museum at System Source in Baltimore MD.
On July 10, 2021, I visited the Computer Museum at System Source in Baltimore MD as part of the Vintage Computer Federation (VCF) Repair Workshop. I also visited the museum in 2020. Warning: Image heavy page ahead!
A Visit to The Computer Museum at System Source, Baltimore, MD
On Feb 15, 2020, I visited the Computer Museum at System Source in Baltimore, MD as part of a VCF Federation Repair Workshop weekend. The museum there is mind blowing. Want to see some pictures? Warning: Image heavy page ahead!
Another Commodore 64 Black Screen Repair
(This was originally a Twitter thread on September 23, 2018) September 23, 2018 On the bench today is a Commodore 64 picked up from @Recta_Pete at Atari Party East 2018. This revision is the cost reduced long board because of the sparse components around the VIC-II. I already spot several problems.
Commodore 64 Black Screen Repair
(This was originally a Twitter thread from September 26, 2018) September 26, 2018 Next on the bench is an early #c64, 1982 original motherboard with 5 pin video out and a lovely ceramic VIC-II. These tend to be tricky in my experience.
MJB Cartridge Expander and 80 column card for C64
I’ve had this cartridge expander for a few years and always assumed it was commonly known about and that the ROM inside had been dumped. It seems that may not be the case, so this page is to provide the information I have about it.
Commodore 1520 Plotter X/Y Gear Repair Guide
NOTE! New replacement Alps gears for the Commodore 1520, Atari 1020, etc are now available! Click here to order your set. You’ve just unpacked your new Commodore 1520. It was most likely sold as untested, as-is or condition unknown. You plug in the cable, turn it on, and it buzzes and grinds for a couple […]
Getting Programs For The C64 CP/M Cartridge
The Commodore 64 CP/M cartridge was released sometime in the early 1980’s, shortly after the introduction of the C64 itself. The cartridge contained the necessary Z80 chip inside to run CP/M software natively. While a novel idea, it was a bit too late with the popularity of CP/M waning which itself had been released almost […]
The Jameco JE520 Voice Synthesizer
The latest acquisition is the JE520 by Jameco. This external voice synthesizer came in two variants: the JE520-CM for Commodore and JE520-AP for Apple II. The only difference was the interface connection to the computer. The Commodore version, the one I have, connects to the user port while the Apple II version connects via an […]
Commodore 1520 Plots .SVG Images
NOTE! Split gears causing causing or plot errors? New replacement Alps gears for the Commodore 1520, Atari 1020, etc are now available! Click here to order your set. I’ve put together a quick program that can convert an .SVG file into data statements that can be used to plot it on a Commodore 1520 Printer/Plotter. […]