I have a Sony UTV originally purchased in 2001, upgraded by CCS in 2007 to larger hard drive. I thought that CCS also replaced the tuners at that time, but I am not positive. Over the past few weeks, I have had frequent episodes of the unit freezing when I enter a channel number to switch channels. For example, if I enter 202 to switch to CNN, it freezes for several seconds (15+), then eventually goes to channel 2, then 0, then 2 (none of which exist, so it then shows "channel not found"). I have never had this happen before it started recently. If I go to the guide first and select the channel that way, it is fine. Is this a tuner problem, and has anyone else had this happen? Thanks.