IBM-1620 Computer by Owen Phairis
Picture History of my restoration of a 1959 IBM-1620 Computer

Panel as received from ebay

A lot of broken and missing switches and lights

I decided to replace all the 10 volt incandesent lamps with LEDs

I decided to use 8mm jumbo white diffused LEDs

Common Anode

First Test to see how they look

Using Arduino-Mega and a TLC5974 driver to run the panels

One panel at a time, lots of wiring

Panels wired, switches & lights replaced on control console

On Off switch broken, had a spare push button switch

Circuit Breaker missing so I put in some lights

Close up of LEDs mounted to a piece of lucite

Control Panel ready for wiring

Empty Cabinet to house the IBM-1620 Computer

Aux Panel with Hex Keypad Input with eight 7 segment displays

Aurdino-Mega for control and 3 TLC-5974 drivers

Eight LEDs so one knows which digit you are inputing

Owen Phairis
P.O. Box 3400
Big Bear Lake
California 92315
(909) 806-5698