At times the Nav/DVD/Radio screen on my 2008 Veracruz displays wavy lines, which completely obliterate the map and radio settings. Sometimes it only lasts for a few seconds....sometimes for hours. The phenomenon does not affect the audio, however, when the screen acts up this way it is impossible to tune the radio or program the GPS. I called the dealer who would not offer any advice over the phone....which to me means that the cost of fixing the problem will probably be significant. Has anyone had this problem and if so, any suggestions as to what is causing it and how to fix it? Thanks in advance.