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Here's the deal: If the phosphor wasn't damaged (spots or specks, shadows, peeling, etc.,) you can have it re-evacuated and it might be fine. But chances are that if it's been to air for more than a short time, it may have gotten corrosion on the cathodes. That will mean it may be dim or have poor emission, or maybe it'll be fine. Depends on a lot of variables.
It isn't a big deal for a CRT rebuilder to evacuate and reseal it. All they do is to blow a new long glass tube onto the tip that broke, put it in the oven, evacuate it, and pinch off the new tip.
Charles
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Collecting & restoring TVs in Los Angeles since age 10
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10-16-2007, 12:17 PM
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