check the signal to the set or have them re wire---for hdtv should read about 0db on the diagnostics screen
tech should show you--yes i was a liitle simple on the 5th page of diagnostics there is a S/N ratio should be close to ZERO (plus or minus a few) DBjahan said:Rang1995 - What does "0db" mean? Also, when you say diagnostics screen I assume you are referencing a device that tech has but can I also check this on the cable box screen?