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Old 02-08-2020, 08:28 AM
Tom9589 Tom9589 is offline
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Join Date: Jan 2013
Location: Stone Mountain, GA
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With only 21 KV maximum, I wonder if the HV regulator is loading down the system and putting excessive load on the flyback. I'd disconnect the cap on the 6BK4 and see what happens to the HV. If it shoots way up, you need to troubleshoot the HV regulator circuit. Be sure and only run the set for a short time with the 6BK4 cap removed.
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