Repair Blog of a 1967 Sony Chromatron

[andy]

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[jr_tech]

I think andy nailed it in an earlier post:

Originally Posted by andy

It's probably similar to the 7" Chromatron except that it has a delta gun instead of a Trinitron gun. In the 7", the color selection grid is powered by DC and serves basically as a lenticular lens to focus the beams on the appropriate color stripes. The advantage is that no electrons are wasted, but it's a lot more complicated to manufacture.

In this design, 3 guns are used rather than applying 3.58 mhz high voltage to the color selection grid near the phosphor.

jr

[zenith2134]

I had a color G.E. from the early 70s with the anode button on the side like that. But yeah, I can't remember any other color tv that had that type of HV connection.