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Further, if you rejuvenated the tube with a CRT tester, bear in mind that any improvement you may notice won't last long, so it is probably just as well that you will have to replace the tube. Rejuvenation is usually done only to restore a CRT to usable condition (albeit dim) until the tube can be replaced; it is not meant to be a permanent fix. The tube will eventually dim again, at which point it must be replaced. CRT brighteners were often used in the 1950s-'60s to extend the usable life of dimming tubes, but again, this was only a stopgap measure and usually resulted in a dim CRT again within months; the only solution in this case was either to replace the tube or the TV.
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. Last edited by Jeffhs; 12-20-2018 at 07:13 PM. |
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