Plate voltage fine, key xmt relay and have about 50 ma. resting current.
Apply 10 watts drive and the 3-500Z (which looks new!) the plate begins
turning cherry red. Didn't have another 3-500Z emiac (other than the pair
unopened with my unbuilt SB-220!) so I tried a known good 4-400A and had the
same result with small amount of drive (+-10 watts or so) and in fact the
entire 4-400 plate lit up red! About 3200v no load and appox 2900 when
drive applied. Any thoughts about possible problem? Tnx Van
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