When I change the position of my cabinet, the Hantarex 25" shows wrong colors in some areas of the screen due to heart and in-house magnetic field change. Degauss does not solve the problem, but it disappear after about an hour of power off. I can suggest you to take the speaker far away from the monitor and wait a couple of days before get worried (get worried...is it right in english? guess is not...I mean 'before there is a serious chance the monitor is bad').