Quote:
Originally Posted by Username1
hook them up full brightness, run for a day or two, increase heater voltage a little, then hit them with a stick near the end of the tube where the red lights are till you hear a spark inside. I did it to xl-100 tubes all the time, only one out of say 20 did not get better.....
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Being
far from an expert, to me, this sounds like it would snap off the end of the tube.