These are interesting photos from the 4105 Unicorn project which was a low cost color graphics terminal. We had an early prototype with an expensive hand-made plastic cabinet in a 5 day humidity test. I got a call during the weekend from Bob Haas who discovered the terminal and took these photos. We never knew how hot the chamber got when it malfunctioned as the temperature graph simply pegged at the maximum. However, after melting a very expensive prototype, the chamber was upgraded to prevent this from happening again.
The thin vertical piece at the bottom of this photo is where the plastic had dripped down from the cart and melted around the electrical outlet box. The pieces on the bottom of the cart were from the floor.