We have the DVDVCR combo hooked up to our tv & only use it to watch our cable. Quite often while watching our tv show, we will have weird characters appear across the top of our tv screen. We have tried making sure the captions were off & have checked other settings but doesnt work. The only way to make them disappear is to turn off the samsung v5500. Is there anything we can do to stop these messages appearing across our tv?