Quote:
Originally Posted by Kirk
That adapter is for a late model color crt. For electrostatic tubes- I too use a VT-71 chassis for this purpose to test an unknown tube. I have found no other reliable way to be sure.
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And yes, that is the ultimate reliable test. I have a few 7JP4 tubes which have great emission. But ion burn on the screen has one of them dim and another one has a burn about 2 inches in diameter, which is dim. I guess it's just the nature of the beast.