what do you mean “mostly in

what do you mean “mostly in the HD channel range.”? does that mean you’re not getting ANY of your HD cable channels? 

I would suspect the problem is either A) Not a strong enough signal–how many splitters are you using for your cable? Did the installer measure the signal? or B) The cableCard is not properly activated–have you tried getting another one? Just because the first tech said “i sent the hit signal” does not mean all is right.

I’ve never used the WinTV device, but does it have any diagnostic utilities to see the log of data?