After changed the resolution from 800*600 to 1024*768 Horizontal scanning failed. All picture concetrated in the thin (about 8mm) column in the center of the screen. osd controls working only horizontal width not.

Changed back the resolution bat the same problem.

Cheked and changed the Q303 (2sc4290) strartup ok bat after 5 seconds started to shrink again ,after power down and wait 5 min started up ok dat the same problem after 5 sec

Need some help Pls