Toshiba 27AF46c vertical lines not straight

[Benyamin39]

Hi,

I picked up a beautiful Toshiba 27AF46c in mint condition which I will use for retrogaming. I also found the service manual.

This TV has all sort of picture adjustment parameters (vertically, horizontally, trapezium, corners...).

Yet the picture is slightly distorted. the vertical lines are not straight ( (look on the left and right edge of the picture, the vertical lines are convex to the center). Unfortunately corner and trapezium adjustments can't help.



Where does this distortion come from and what is the way to straigthen the picture. Is it usually a service menu adjustment or do I have to adjust something on the neck board.

Thx for your help.