Tv turns on but no picture. Then Tv shuts off by itself.

Most likley what it could be is an interferance in the TV. Modern TV's have a feature that will shut itself off when it is not receving a picture. For instance, after so many minutes of "snow" it will shut off.sometimes this can make the TV think there is no signal at shut itself off.Anyway, I suspect its an interferance issue. Perhaps moving the TV further from the source of the interferance might help.

check the menu for power saving option if it`s on shut it off.

the only way is by bringing to a tech.i think there is no need fro self-fixing with problems like this.try tapping the tv several times then turn it on.

hi this s grizmofreak
solution to above problem
this s because of the secondary emissions of picture tube, and once the supply stops the emmissions from the picture tube wont stop for few seconds and horzontal scannin problem.

please do rete me on the above solution.

When it shuts off by itself, does the blue circle screen under the "Samsung" label show a picture of a light bulb? If so, it's probably time to replace the lamp.

Does it shut off shut off, or is there audio present after the lamps shut off? When you shine a light to the screen do you still see picture kind of?

If still see picture, it's inverter/power supply or CCFL bulbs itself. If no picture, completely off, it's DEFINITELY the inverter/power supply.

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Yes, you can adjust the picture by using your remote going to settings, or "Adjust" when your t.v. turns on and off by itself could have'ft to do with nasty weather near you, or the cord is loose and it needs to be pushed in all the way.

Sounds like the typical Flyback and shorted horizontal output transistor. Problem is the transformer is NO Longer Available