Thanks for being so diligent to save that set. If I ever saw a roundie out for the trash, I would take drastic steps to get it to safety like you did!
I also feel your pain on that CRT. Last month, I had the near-new RCA 21FBP22 "hi-lite" in my '65 metal Zenith neck itself with no help from me or excessive HV.
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I sealed it up per Steve McVoy for a trip to ETF for a "rebuild". I guess my Zenith hated having an RCA replacement
