Quote:
Originally Posted by wa2ise
A few more thoughts: Looks like the flyback pulse leaking into the video. Could be from the CRT cathode wire being too close to the flyback transformer (This still an on bench test setup, or did you put the chassis in the cabinet?). Maybe the CRT aquadag not grounded? Brightness wire line to the CRT needing a bypass cap? (maybe the wrong size cap or bad connection?). Cover not mounted on the flyback cage (TV set designers relying on the cage to contain the flyback pulse from leaking into other parts of the set?)
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You might be on to something. It just occurred to me that this set doesn't have a HV doorknob cap and the test CRT doesn't have any aquadag coating. So when it's on the workbench there's no HV filtering at all.
Quote:
Originally Posted by old_coot88
How solid is the horizontal locking action itself, rock solid or soft and 'drifty' around center? Does the set use tube diodes for hor.AFC or the typical 3-legged SS phasing diode? If the latter, it's a very common failure mode causing weak or absent hor. sync.
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It does have a 3-legged SS diode and I haven't replaced it. The horizontal lock is OK, but not great so maybe I should replace it.
Quote:
Originally Posted by Phil Nelson
Urk, that almost looks like an acute case of the "fuzzy bar" issue that drove one Predicta owner nearly crazy. There was a long thread about that either here or on ARF sometime in the last couple of years.
Speaking of GEs, isn't this the same model for sale in Providence?
http://providence.craigslist.org/atq/3708999095.html
Phil Nelson |
That's close, but not quite the same. The legs go all the way up to the top on my set.
