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Old 07-01-2020, 03:47 PM
Jon1967us Jon1967us is offline
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Join Date: Nov 2018
Posts: 350
Quote:
Originally Posted by zeno View Post
Does the vert lock in ? If so odds are its not in the sync sep stage.
Diode probably could use any little signal diode like the one
used as the video detector. It should just pass the positive H sync
pulses.
BTW any markings or part #s in the Sams ?

73 Zeno
It’s weird but after some component replacements yesterday, on stuff that had drifted way out of tolerance, I can’t adjust the vertical anymore. After these replacements the picture seems to have degraded, even though the replacements are close to spec. I’m using a BK NTSC pattern generator and it’s almost impossible to get just the horizontal lines dialed in, let alone the staircase pattern as that pattern is repeated vertically. This set is a nightmare.

Nice strong CRT and deflection though.
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