You may have NATIVE resolution set, and even changing channels can cause the blinking with different resolutions. Press format button on the front of the Tivo Premiere to cycle to a FIXED 720p or 1080i resolution and the blinking is reduced.
TiVo HD 1TB (157 HD Hrs, PLS, "S3HD")
Roamio, Oh Roamio!
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!