Quote:
Originally Posted by DaveWM
all 3 of my maggie B&W all have that photo cell on the front, adj brightness to room lighting (all use the same mid 60's chassis). Works pretty well, but you need to select on of 3 possisble ranges (think its called magna lux for something like that) from a jumper on the chassis. Works pretty well, and amazes folks that see it (there are a LOT of people that have never seen a B&W set, guess I am getting old).
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I remember some Magnavox b&w TVs of '60s vintage having the "Magnalux" system, with the photocell that adjusted picture brightness according to ambient light levels. (IIRC, RCA also had a system similar to this on some of its high-end three-way entertainment-center consoles in the early '60s; I seem to remember seeing a photocell on such a set one of my great-uncles owned.) However, I did not realize that this system was adjustable only by means of a chassis jumper; I thought there would be a three-position switch on the rear chassis apron that would set the sensitivity level, with a defeat switch (or a fourth position on a rotary switch) to disable the feature if manual control of screen brightness was desired.