The second reportedly kaput 8877 (s/n LZZ 506) that was removed from an
AL-1500 was tested today. The positive and the negative anode/grid
leakage was under 2uA @ 8000v - so gold-sputtering is not likely. The
heater has continuity. The anode appears to have been quite hot -- but
obviously not hot enough to cause seal failure. Any guesses from the
8877-mavens as to why this tube failed?
end
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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