Sony KDL40W5500 - freeview listing not working

[peshyxp]

The Freeview listing doesnt update on my 1.5yr old Sony

The channel numbers appear but when i go to access program listing details it keeps saying hasnt updated and suggests i leave the tv on standby!!

Teletext etc works fine only Freeview listing doesn't

Anyone has any idea why this isnt functioning, since was functioning before

Thanks