I have a very irritating problem with our Sony Bravia KDL32WD756 TV whilst watching via our Humax Fox T2. I have posted this on the Sony community forums without success (they blame the Humax).
We watch the TV via Freeview, preferably in HD, via the Humax Fox T2 (to enable pause/rewind, and the Sony's epg is terrible). The Humax is connected via a HDMI cable to HDMI2 on the TV.
In essence when we watch a programme transmitted in 4:3 aspect ratio through the TV it is converted to 16:9 wide zoom, which is what we want. When we watch a 4:3 programme through the Humax it is shown as 4:3. If I manually alter the screen display to 16:9 it is fine until the adverts, but reverts to 4:3 when the programme starts again.
We had an older Sony Bravia tv which handled the Humax input correctly, converting 4:3 to 16:9. The essence is that I unplugged the Humax's HDMI lead from the 20" Bravia and plugged it into the 32" Bravia and the way the pictue is displayed is different.
If I change the TV screen format from Normal to Full then the picture is displayed as I want it to be. So the TV is quite capable of showing the desired aspect ratio, it's just that it won't keep that setting. I get 15 minutes, the adverts come on, and it's back to 4:3.
My gut feeling is that it's the TV, but perhaps someone here can help.