vertical lines in a Toshiba TV

[vol.2]

Originally Posted by Doug

I notice on the 12v supply there is an L061
Which may be there or not by the schematic
Wonder if it was a mod maybe for this issue.

Interesting. I am not at home right now, but I can check in a couple days to see if those parts are there.

I question if they would have an effect though because those parts are not on the 12V(B) supply that powers the AN5352 jungle IC, they are across the (C) and (D) 12V source. The (C) source does power the output of the optocoupler ICs on the video input, but I experimented by injecting an RGB signal directly to the Jungle IC and blanking the video input signal entirely and the ringing was still present. If anything, the ringing was more visible when using an RGB signal into the jungle IC than it was before, although that might have more to do with the jungle IC and the way it handles the brightness and contrast for the OSD signal than anything else; I can get the ringing pattern to show up more sharply by messing around with the brightness and contrast on the set.