Brand new Sony Bravia KDL-32CX520 LCD TV.
Picture is fine when watching analog TV or when looking at the internet.
When watching terrestrial UHF digital freeview, light areas of the screen are covered with black dots, like on peoples faces. It looks like they're being plagued with flies.
It does it on all digital channels.
I've updated to the latest software, but no improvement.
I've tried two different outside areials, & one inside, with no change. The TV says it's getting 95% signal strength, with signal quality 100%.
I can't see anything wrong with any of the setting, and have tried changing each to max or min.
Any ideas?

Here is an example of the dots, note them on parts of the light coloured background, face & hand. When the picture changes they may appear anywhere on the screen where there are light areas or faces etc.
