In article ,
says...

Seen like that? Even my boss said this's new problem and said wow,
Boss was hopeful it was signal quality but it is not.

snippety

Herringbone patterns are often an indicator of outside
interference from nearby radio transmitters, or other devices that emit
RF signals of one sort or another.

Have you tried feeding the set a controlled test signal (say,
color bars and tone) inside a screen room to eliminate the possibility
of outside grunge?

Do you have a BPL (Broadband over Power Lines) trial going on in
your area?

Is someone running a microwave oven at the same time you're seeing
the herringbones?

Happy hunting.



--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"