Quote:
Originally Posted by FrankieKat
Pulled the cap, buzz is gone. No arc from the screwdriver... tiny little blue spark if you basically touch the cap but that's it.
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Good news -- back in business, it was the 1B3 tube after all.
https://youtu.be/fsLuy2y1dy4
Brightness is still a problem, the above video is taken in a pitch black room with brightness and contrast up almost all the way before the image completely saturates. The brightener increases the overall amount of light produced, but the poor contrast is unchanged. This video is without the brightener. Would also say it looks brighter in the video than in person.
The picture is a bit noisy too, but that could be more related to the $20 DTV box that I'm using. Depending on how this all turns out, I might try to pick up a BT Agile for a better signal source.
The horiz and vertical lock are solid as long as the station is tuned in properly and both controls are pretty much at their extreme clockwise position. I've subbed out every tube at this point and tested every resistor, and all caps are replaced. The horizontal control is a little bit fritzy so I'm going to try to replace it and see what that does.
I purchased an VA62 pattern generator, a CR70 CRT tester and a 1000-1 HV test probe so should soon be able to determine CRT state.
FK