I don't recognize that model. Are you in the states or out?
Here we have a 2 yr. P&L, so if you have that - it should not be a problem to rectify.
Don't know if it is a panel, but it is not normal.
Before you call service, though - make sure you experience the same thing on all inputs and media sources. If it is mostly isolated to one media - say Dish through the component hookups - then it might be wise to try different connection, and make sure the media source is not a problem.