Thread: 1977 Zenith 9" rolling problem
View Single Post
  #3  
Old 11-12-2022, 11:11 AM
damen's Avatar
damen damen is offline
VideoKarma Member
  
Join Date: Feb 2008
Location: Portland, OR
Posts: 672
It looks like the sync pulse comes out of pin number 15 of IC chip IC401. If the horizontal is working, I would go to cap C601. The other caps on that chip can also affect sync, if that is the hold problem you are having.
Attached Images
File Type: jpg Zenith JB 003.jpg (55.4 KB, 21 views)
File Type: jpg Zenith JB 001.jpg (68.0 KB, 16 views)
File Type: jpg Zenith JB 002.jpg (74.9 KB, 18 views)
Reply With Quote