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Old 03-06-2018, 12:09 PM
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TinCanAlley TinCanAlley is offline
Duck, you sucker!
 
Join Date: Sep 2008
Location: So Cal, CA
Posts: 718
Quote:
Originally Posted by DavGoodlin View Post
That was a good capture. Was the video source a paused VHS tape? The 9-57 horizontal osc module was susceptible to flag-waving at the top of the raster with many VCR's.

The cure from PTS and Zenith-OEM among others was a 9-57 VCR, which was an empty 9-57 pcb used as a plug for the CC-II H-osc, 9-90 module on top.

This looks like a video or sync lock issue instead of sweep. Look at the video detector sync pulse with a scope and you could see that twitch.
Not a VHS. It's a paused DVD. When it started acting up, I paused it and recorded.
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