Quote:
Originally Posted by jr_tech
Yes, for sure measure the heater voltage output of the tester with a decent voltmeter, known to be in reasonable calibration. Measure the socket with no load and also when connected to the crt. Indeed, the tester switch could be mis-registered or even mis-wired.
I would NEVER connect an un-verified tester to a nearly unobtainable CRT or even a small inexpensive vacuum tube... NEVER!
jr
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Yeah, for sure! This could have been bad, but thankfully, the tube survived with flying colors. (Get it..) I'll definitely be measuring this thing before it sees another one of my tubes. Maybe Friday I can do that. I've just been so busy with band practice and my new job fixing Rainbow vacuums, by the time I finish, I have no energy whatsoever. Here is a picture of what the B&K 445 indicated the second time I tested this tube at 6.3 volts (supposedly) About 40 seconds after this photo was taken, it dropped to about 200 on the scale.