5-yr + LG smart plasma TV lost sharpness and looks like a film covers it after installing a Hopper upgrade. Is that the fate of older plasmas with new equipment in general?
2012 Panasonic GT50 plasma owner here. I upgraded to a Hopper/Sling back in 2013 from a VIP622. The picture is as beautiful today as when I got the unit. I have a calibrated LG OLED replacing that unit. Have you tried a new HDMI cable? Are you running your devices through a AV receiver then to the plasma?
Ha! No. You have a different issue. The Hopper didn't cause that. I currently have 6 plasmas all hooked up to either Hoppers or Joeys. Picture looks fantastic.