Hi. I have a problem with my Studio Display 21". I already received it in this condition. At first glance, you can see that there is a problem with horizontal deflection. I have experience with analog circuits, but this monitor is a highly advanced digital one. I've already looked through the deflection board. I found one suspicious connection there, but repairing it did not help. I also checked most of the capacitors and semiconductors and they all look good. Is it possible that the reason lies, for example, in the Video board or somewhere else? The flyback transformer does not shoot, although of course I suspect it too... At higher resolutions the image becomes more unstable with a crest. Geometry regulation from setup is working good but is lack of adjustment range..