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Originally Posted by andy
I'm almost sure "Econoquick" was when they completely stopped using instant on. The explanation was that their new CRT design warmed up quickly without using any power when the set was off. I could be wrong, but I never noticed the heaters staying hot on any Econoquick set I saw. Before the Econoquick sets, they kept the CRT heaters at about half power when the set was off.
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Now my curiosity is aroused... I'll look at a few Sony schematics and see if I can come up with an answer.
Charles