Quote:
Originally Posted by zeno
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
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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.
07-01-2020, 03:47 PM
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