Hi rapearce,
I'm very sorry for any inconvenience this may have caused you. Unfortunately, as you expected, this sounds like it may need servicing. Here's the thread where you can get details on setting that up: http://forums.cnet.com/7723-13973_102-542437/service-issues-click-here-for-help/
Regards,
HD Tech
Samsung PN58C550 plasma TV less than two years old. Recently noticed 3-4" purple line across the top of the screen whenever a white scene is on the TV. Internet search indicates this is a frequent problem with Samsung plasma TVs and the only permanent resolution is to replace the panel. That would cost as much as a new TV! Anyone else have this issue and how was it resolved?
Chowhound
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