For tuner problems, especially the digital channels you should check for a TV firmware update at www.sonystyle.com. I was having some strange loss of digital channels on our 40" Bravia, starting with channels only appearing for a second before the screen produced a 'No Signal' message. After we tried the automatic retuning, then we could not even get the one second signal. None of this appeared on the description of the download. However, we downloaded the patch to our PC, loaded the file (19 MB) onto a small flash drive, which we then used to upgrade the firmware in the TV. All our digital tuner problems disappeared!!