Motorola VT-71: blanking + schematic

[david winter]

Hi,

I'm finishing the restoration of a Motorola VT71 (chassis TS4-D).
I get a quite nice picture however there is a terrible raster effect over the picture caused by the beam going back to initial position for next frame.

I wanted to know if anybody knows how to remove the raster and also how to remove the teletext causing some static on the top of the picture ?

Also, the contrast works somehow but will eventually alter the picture quality when put to the maximum.

The most important is to remove the raster effect, the rest can be done later.


Thanks !