[Jeffhs]

Is your Sylvania GT-Matic TV the model with the picture controls behind a locked door on the front panel? I remember reading, in an advertisement for these sets some years ago, that the GT-Matic's color controls and circuits were so stable, once the controls were adjusted for a good picture, that the user could lock the door over those controls with a key. The controls seldom required readjustment once they were set, which was the reason the control door had a lock to which the set owner held the key. This feature also prevented children and other curious people from fiddling with the color controls once they were properly set. I am curious about this since Sylvania was the only TV manufacturer, to my knowledge, that had a locking door over the color controls, and the GT-Matic feature was found only on their best 25-inch sets.