Screen jump/bounce with main signal boa...

When using coaxial, video or component the screen or displayed picture will jump slightly but constantly. I switched to the hdmi input after the issue started, no jump to the picture but a different issue developed. After about a week of using the hdmi the screen started to develop an issue with the horizontal and vertical pieces of the display. Such as, the screen will occasionally have a 1-2" blue strip at the top. The screen will also split down the middle and half will twist and scatter different from the other half. The entire time this happens the screen or transmission is visible. After powering down and turning the set on almost immediately it will correct the issue but only for 15-20 minutes or less. I suspect since the main input and the hdmi input boards are separate that the issue might be a power supply, can anyone give me some guidance. Thanks