Quote:
Originally Posted by UberVacTuber
Thanks for the input. The picture quality seems pretty good, and the audio is clear. . . . . . .
Here's a few screen shots using the Techpreservation test pattern DVD.
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Uber,
I think we have a little mix up in terms here.
I do not see an alignment problem with your pictures, but do see a lot of other adjustments off.
On a B&W set, alignment normally refers to IF and Tuner circuits, and unless you have the equipment and have done one before, I'd suggest that you have someone who has experience here watch you the first time you attempt one, because it is very, very easy to convert a small problem into a major one.
The incorrect adjustments that I see in your pictures are:
Neck shadow on right edge of the picture. (Possible causes: Yoke position, focus coil position and/or ion trap magnet position or weakness.)
re: The top of the picture looks a little wavy
Your sync seems to have a locking problem, which might be related to your linearity problems, but it probably is not. Substitute known good sync tubes. Try to get a schematic, like Sams that gives the voltages and check sync circuits. Suspect plate to grid caps of having leakage and you will have to open one end of them to check.
Once your sync is stable, trouble shoot the linearity issues.
Both the horizontal (do first) and vertical linearity adjustments seem off. If controls don't have enough range, suspect tubes first and then leaky caps. The Ryder schematic for the 30A1 on the ETF site gives good instructions for these adjustments.
Re: (the picture will twitch along with spikes in the volume).
Disconnect the speaker and put a 5 to 10 ohm resistor across the feed connector.
If this removes the video problem gently tap tubes in tuner/if/sync and video to see which one has gone microphonic. (Note: It is not necessary to put the load on the audio output transformer with a disconnected speaker, but on a tube set, it always is safer and a heck-of-a-lot less expensive than a fried output transformer.)
re: At maximum brightness, a sliver of the right side of the raster disappears.
Poor high voltage regulation. Check 1B3, horizontal output, damper, if check is OK, substitute a known good damper tube as testing.
Another less common cause of poor HV regulation is a gassy CRT, or leaking coupling caps in the grid circuits of the CRT.
Jas.