I have 42in panasonic plasma TV I only have it couple of days and it just swith it self off last night and it won't come back on there a wee red light flashing at the bottom beside the power button

Since it's practically brand new(?), it would be best to call the store
Where you bought it and find out if there is someone in their Sales or
Service Dept. who might be better able to advise you on how to address
The issue. You should still be able to return it, if you can't get it to work.

You might also look through the Owner's Manual. There is usually
A help line listed, usually near the front or back of the pamphlet,
And I have found the customer service representatives to be
Helpful when new electronic equipment is problematic.

If you try to fix it without the help of either of the above, you will
Probably void the warranty.