i was watching the nascar race yesterday and all of ad sudden a white line showed up on the far right side of the screen stretching from top to bottom and now there's a few inches gone from the right side of the screen, at first i thought it was a problem with cable but it's still like that when i turn the cable box off and just have the TV on, and this morning my mom even tried completely un-hooking the cable box from the TV then turned the TV on and the line is was still there,

i took a few pics, i took them with my phone so their a bit blurry but you can clearly see the white line and the lost screen space,








and this is what it looks like with the cable box turned off and just the TV on:




anyone ever had a problem like this before or know how it can be fixed?