Using a Playbase on a Panasonic P50ST30. Have successfully turned off the speakers and have the challenge of removing the on-screen messages whenever changing volume. Followed the "Eliminating annoying messages on your TV when using a remote" link here for my Verizon Fios remote, got rid og the TV's messages but the STB fixed volume remote icon now shows up whenever the volume is used. I thought those steps were to remove these messages? Followed the instructions exactly.