View Single Post
  #74  
Old 12-28-2013, 01:37 AM
Eric H's Avatar
Eric H Eric H is offline
Administrator
 
Join Date: Jun 2002
Location: So. Calif
Posts: 11,565
Finally some progress!

I finished replacing the film caps and restuffed one of the cans shown in the pictures below.

This had a major effect on the picture, it's no longer too dark and contrasty and the AGC control responds much more smoothly.

The Drive controls still have no effect though and to get acceptable brightness I have to have the Screen pots turned up to maximum.
In the service position however I have to turn the screens down or the three color lines are way too bright so perhaps there's something wrong in the circuit around the service switch?

Also there is a lot of herringbone in the picture and I can't get good picture and good color together at the same time, it no doubt needs an alignment since I swapped out the entire i.f. board and replaced the three video i.f. coils.
Attached Images
File Type: jpg image-1.jpg (16.1 KB, 55 views)
File Type: jpg image-2.jpg (19.8 KB, 68 views)
File Type: jpg herring.jpg (27.0 KB, 55 views)
File Type: jpg badfilter.jpg (20.1 KB, 54 views)
Reply With Quote