I picked up this 19" Zenith system 3 with zoom space command, which was made in May of '78. This set uses the short lived system 3 chassis that came out before the 9-160 based sets. This one uses a 9-153 HV module and a power transformer type power supply. The set came to life; but, I could hear something frying and I detected an odor. The sound and smell was something similar to a cap that was about to blow. I'll have to turn it on with the back removed and maybe I can tell what's getting hot. Unfortunately, I don't have the remote; but, I think this set uses the 7 button battery operated ultrasonic remote.