Sanyo TV-line in middle of TV

[gioerger]

I have a Sanyon 19" TV DS25500 When I turn on set the picture is a thin line in the middle of the set and black above & below the line, I can hit the top of the set and sometimes the picture appears, sometimes the picture stays, sometimes not.

I don't know if something is loose, I love this set, don't want to replace.

[jts1957]

Resolder pins of Vertical Output I.C.