Where one or more electron guns in the CRT have deteriorated due to wear and
tear, it is sometimes possible to give them a new, but possibly, temporary
lease on life through rejuvenation using a special piece of CRT service
|NotTaR of Television Sets : CRT rejuvenation
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(From: Gary Klechowitz (email@example.com).)
When I rejuvenate a tube I inform the customer that there is no warranty on
the job. Rejuvenating a CRT is like when Clatuu was brought back to life by
Gort in "The Day The Earth Stood Still". When asked "How long will you live"?
he replied: "no one knows".
I use a Sencore Beam Builder. If your tube is just moderately dim and blurry
but still shows good cut off threshold, I would just use the auto restore mode
on the beam builder rather than using the restore button. If the tube is
really bad with little or no cutoff threshold, then the rejuvenator is needed
but that has less than a 50% chance of fixing the tube and in many cases the
tube gets worse to trashed in the process.