Weak CRT?

[Charlie]

Don't forget... before attempting to press the magic button on your rejuvenator, you might be able to brighten your CRT up simply by cranking the heater voltage up to 8 volts for a while.

In the past, i've noticed emissions on the meter coming up into the green fairly fast when switching from 6 to 8 volts... say within 5 to 10 seconds. In this particular case, it seems that the crt will turn out good after leaving it at 8 volts for a while... say 30 minutes to an hour.

On other occassions, if I switch the tester from 6 to 8 volts and it the meter does everything it can to slowly crawl up into the good zone... may even fluctuate some. These particular tubes seem to not hold the better emissions once it's been on 8 volts for a while. At that time, then I might try the magic button. It may or may not work.

Using the rejuvenation button may or may not make things better. If it does, it usually seems the better results are short lived. The tube might stay brighter for a week, or maybe for a few months. Only use that feature as a last attempt to improve matters.