Quote:
Originally Posted by Chad Hauris
The cat always is interested in things we're working on!
I tried re-flowing the solder on the pins of the CRT but no luck.
The weird thing is, is that it did show some emission for a few seconds several times when the tester was first connected and I turned the filament voltage up to 9 volts. When the filament voltage was kept at 6.3, no emission. This only occured 2 or 3 times when the CRT tester was turned on after leaving it off several minutes.
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that sounds like a intermitant connection somewhere. it could be where one of the welds have broke loose internally eg; control grid, g2, cathode, etc. or it could be the socket adaptor on the end of the rejuvenator that might be making a poor connection. i have seen that happen too.
Quote:
Originally Posted by Chad Hauris
After these few times, it never showed emission again, and when it did it was only for a few seconds. I maybe better check my tester again with a known good CRT but it seemed to give legitimate readings on some color CRT's several months ago.
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yes, but those were using different socket adaptors, weren't they?
one other thing that i would like to suggest is that since you are working on these vintage sets is to get a rejuvenator from that era, like a B+K model 440 CT. that works the best on them old tubes. i happened to find out a long time ago that the rejuvenators that were made in the 70's - 80's did not do a very good job of rejuvenating the old type of crts like the one that you are dealing with now. in fact, on some vintage crts they would not rejuvenate at all with the modern rejuvenator. that is why i kept this old B+K & refurbished it, it would do the job that the other one would not.