TV trouble
new TV panasonic model tx-l19x5b it is going all right but after a while it tends to switch off .Have tried retuneing but no thing else could any one help.

If you don't have a timer on it, then I would say you need to take it back and get a replacement for it.

Have you read the instructions to see if there is a automatic timer, I know the one I have in the US, you can set it to go off after a number of hours ?

Also if it goes off, will it turn right back on ?

Is it always exactly 3 hours ?