How can I fix my Grundig widescreen TV model no. MW 82-2699 NIC/FT?

I have a widescreen Grundig TV (32"). Purchased about 5 years ago. Model Number MW 82-2699 NIC/FTOver the past couple of weeks it keeps going into standby on its' own and sometimes comes back on it's own. Now it seems completely dead - no power. Have checked obvious i.e. fuse, different plug points but still nothing. Bearing in mind the time of year it may be a blessing in disguise but any help or advice gratefully received. Many thanks