I have recently moved into a new flat and my 42″ Toshiba LCD, which was working fine in my old flat, keeps switching off after 2-3 seconds. I sent it to a Toshiba recognised repair shop and they told me the TV worked fine in their shop. Can this have something to do with the power supply of my flat (other appliances works fine), or is the repair guys simply lying to me?

Answer:
Does the Television have a 'sleep timer' on it? That may need adjusting, but to be honest it doesn't sound like it.

It may also draw so much current off your mains supply that could also cause it to switch off because it doesn't get enough.

Have you actually seen the TV working in their repair shop or are you taking their word for it that it works?

Could you ask a neighbour if they would be willing to plug an extension lead into one of their sockets to try it out? Just explain you think your electricity supply may be faulty and ask (nicely) if you could borrow their one for a few minutes.

If it still plays up, I would give your local electricity supply company a ring and see if they have the ability to recommend anything that may be at fault.Perhaps get your sockets tested.

Do you plug the TV into the same socket each time? It could be the socket itself is faulty, so try it with something else like a table lamp.

Answer:
What is connected to it, a sky box or freeview or something else?

I purchased a tv a few years ago and it would switch off and on again each 20 minutes or so so I took it back for repair and was told nothing was wrong but back home it did the same thing. I lived with the problem until one day whilst watching a DVD I noticed it was ok for over an hour. It turned out to be a problem with my sky box on certain channels causing it to blink off and on again.

Have you tried it in a different room or at a friends home, I appreciate it is awkward to move about but you need to eliminate all possibilities.

If you manage that then try it with nothing attached, then if that works start connecting your sky box/dvd or whatever you have attached one by one until you find the fault.

It could also be something like a scart cable shorting out so you could maybe try a new one.

Answer:
Plug something else into the wall socket such as a computer or radio, see if that turns off after 3 secs.

Ensure ALL cnnections are securely plugged into the back of the TV AND the wall. Make sure that no one is sitting on the remote control.