My New Keeper - '83 Sylvania E34-53

[zenithfan1]

Originally Posted by PunkTiger

Hmmm... On that last picture, between the channel display and the control knob, is there some sort of sensor in that spot?

That looks like a light sensor that controls the auto brightness depending on room light. Shine a flashlight on it and see, the picture will get really bright. I have several sets with this. I like it as the light comes in right on the tv sometimes because of a picture window on the other side of the room. Very popular in the mid to late 70s into the mid 80s, a few companies kept the feature but not many after then.