Are the white lines (or shadows) apparent in the viewing of the television?
Thanks for the pictures, by the way. They give a really good illustration of what you're seeing. I did check with service and sent these pictures over, and they noted that this can happen, but normally it doesn't affect the viewing picture on other inputs.
Let me know if it does.
In the 'Self Diagnostic Mode' under the 'Picture Test' I noticed a whitish vertical line in both of the magenta bars. The green bars do not exhibit this problem. Any idea what causes this and if it means there is a problem with the set??