IBM 5150 XT keyboard adapter
After I repaired my IBM 5150 PSU and fixed RAM problems, to proceed I needed a keyboard, and the keyboards I had all were PS/2 […]
Electronics
IBM 5150 RAM repair
After repairing the PSU of IBM 5150 I was left with a couple of errors one of which was related to RAM. The main error […]
IBM 5150 PSU repair
Got me a nice IBM 5150 PC. This is the first PC of its class and I will make a separate post about it when […]
Fixing Robotron 1715 PSU
I consider myself not bad in fixing electronics considering it is just my hobby. But for a long time I was hesitant to touch switched […]
Fixing EPSON SMD-1000 floppy disc drive
Another fix I did to my Laptop 386sx was fixing its EPSON SMD-1000 FDD. It was working – disc was spinning, head was moving, but it could […]
My first Real-Time Clock chip mod
Recently I got GA-586HX Rev 1.53 motherboard. Wanted to test it with Pentium 166 CPU I had. Noticed that in Bios I can set whatever […]
Adventures in repairing Commodore 1084s monitor
One day I was craving for a monitor. Not a regular Liquid Crystal Display or Light Emitting Diode type, but for an old Cathode Ray […]
Repairing ZX Spectrum +2A tape deck
On ZX Spectrum +2A I have a tape deck was not working. Well actually it was working, but games were not loading as it seemed […]
LCR-T4 transistor tester original firmware
Bought cheap transistor tester from eBay and currently experimenting with firmware updates. I was able to program it with this version of Markus transistor tester […]
Modify Arduino 5v relay module to work from 3.3v
I am implementing a power-off function for my Ender 3 using OctoPi. For that, I need a relay and I happened to have one. Unfortunately, […]