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probably not... manufactures were kinda stingy on the warranties. I bet 2 years max on the CRT. We rarely replaced one in our shop either. We'd come across some bad ones, so my Uncle would try to rejuvinate first, so the ones that got replaced were really bad.
Whenever I see an old set that had the tube replaced within the first 5-7 years, I always wonder if it was a repair shop running up the bill. Especially on roundies (those 21FJ's were bullet proof)
I have a 68 Magnavox with a 1971 RCA replacement tube.. so the first tube didn't last 3 years, but the 2nd one tests good after 40? hummmm.....
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