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I've never worked on a set with a 5U4, but according to the seller, 5U4 tubes are either good or bad, no in between, and they don't test, or can't go by what the tester says.. It's not like I have the extra room and have these tubes lying around somewhere.. If that was the case I would have tried other tubes.. If it's a questionable tube, it would be something I would have to find on eBay or order from Orlando.. I don't want to order tubes that are already good... To be honest, I don't know where to start.. I thought of ordering 12BH7 and 5U4 tubes.. But I don't know..
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Looking for an all tube or hybrid color TV set from the late 1960s, early 1970s that's in a steal cabinet..
Last edited by tvcollector; 09-03-2015 at 07:49 PM.
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