Thread: zenith porthole question
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  #16  
Old 02-05-2015, 09:05 PM
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Electronic M Electronic M is offline
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Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
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I'd try subbing the IF tubes with known good/NOS tubes. If that fails start checking for shorted or drifted capacitors, and open or shorted transformers/chokes.
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