Sunday, 26 February 2023

Compaq Contura 2820A Keyboard Repair

I bought this Compaq Contura 2820A laptop that was in working order except that a few keys supposedly did not work for around $40. The laptop has a 25mhz 368SX CPU, 4mb of RAM with 121mb hard drive. It is running MS-DOS 6 and Windows 3.1.

Compaq Contura 2820A running Blake Stone

Sunday, 12 February 2023

Tempest Programmable TV Game Composite Mod

A simple circuit to get composite video alongside audio out of a Tempest Programmable TV Game console using a BC557 transistor. The circuit is based off of the schematic from John's Retro Workshop schematic.


Tempest Programmable TV Game circuit

Compaq Contura 2820A Keyboard Repair

I bought this Compaq Contura 2820A laptop that was in working order except that a few keys supposedly did not work for around $40. The lapto...