Please try turning off the TV and unplugging it from the wall electrical plug.
Wait for 60 seconds and plug it back in.
Now turn it on and see if you can bring in those channels.
If not please make sure that the aerial cable is plugged into the back of the TV tightly.
If still no joy, is it possible for you to take this TV to the location of the other one try using the aerial cable in the other room?
If you can do this and you still can't receive these channels please let me know and we can continue with the troubleshooting.
I am assuming that your TV is plugged into a roof aerial rather than Sky box?
Yes the Bravia KDL 26T30 is plugged into a roof aerial not sky box - I have tried all the suggested solutions without success - I have also tried using another aerial but still no go - I think the problem is with tuning process within the the TV - I have tried the automatic tuning a few times but it does not pick up channels 3 / 4 / 5 - also tried the manual tuning for these three channels without success - all the other channels and the general tv are working ok.
I'm going to Opt out to let another Expert help you. There is no need to rate my service as I have not been able to help you today. Thank you!
Bought TV 4/5 years ago - problem started late last week