I saw a movie (tv show?) on tv when I was a kid in the 80's. I believe it was from the mid 80's, but I'm not sure on the date. I remember being freaked out from watching it on TV, and a scene where they guy's legs get crushed by a door which drops down from the ceiling, and his legs turn robotic. I remember a later scene with smoke dissipating to reveal that he has been turned into a robot (I guess the gas was toxic?). I seem to remember something about him being an astronaut (maybe a scientist?) that was exposed to a gas or radiation that somehow turned him into a robot when he was hurt. I seem to remember the robot having big red eyes, but it's a fuzzy memory. Please note it was not cartoon, and it was in color. I'd appreciate any help identifying this show as I still remember being up all night being scared by it.
You might be thinking of Infiltrator from the CBS Summer Playhouse. It is a about a scientist that turns into a robot when he's in danger. It's been years seince I've seen it so I don't remember the specific scenes you are referring to but here is the video. (It's the only recording I've found and it's pretty bad quality. It was probably copied from someones VCR recording.)