Ok well not exactly over night but me and my latmates were watching freeview and all of a sudden the picture and sound cut out. Now we can get tv times and listings and navigate channels but we get no picture and no sound. It's also showing that we are getting a signal.

Terrestrial is working fine, good picture and sound.

Any idea what could have caused this and how to fix it? I would be very grateful!!

Thanks!

Have you tried turning off at the mains leaving for a couple of minutes and then powering up again?