Its sulking!
No, but seriously, its probably needs either resetting or a PSU repair.
To reset do the following:
Menu
4 (set up )
6 (help )
then press the green button.
To restore the factory settings, press the red button.
Note: By carrying out this operation, any recordings will be lost.
If you carry out this operation after say 11.00 am , then no downloads with be recieved tonight, as this is the time the epg download takes place.
Borrowed from Digital Spy Forums.
Credit goes to them.
If its the PSU go to a tv engineer for a quote, they`re usually quite reasonable or obtain an exchange/replacement PSU from Ebay.
Good luck.
thomson fan, June 2012