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  #31  
Old 02-16-2019, 09:53 AM
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FreddieFerric FreddieFerric is offline
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I was told that tube testers could not put enough plate voltage on a power tube (like a 6550) to tell if it was bad. Is that true?
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  #32  
Old 02-16-2019, 11:16 AM
ariess ariess is online now
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Not true. My Amplitrex 1000 puts 500V on a 6550
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