Automatically turns off

What happens before it shutting off itself?
Are you sure that the timer off isn't on?
Normally, the self off may happen because the TV goes into Protection Mode due to a failed circuit board.

if you take the cover off, then take a look at the capacitors.
check if any have bump ..

sounds like your power switch is broken. Take the battery out of the remote and see if it still turns on and off. If not its your remote. If it keeps doing that, you may have to get the power button replaced.

This model has a self check: with the set plugged in turn it on--green power light comes on and a few seconds later goes off.

On front of set press and hold BOTH the menu and input buttons at the same time for at least 5 seconds and release both buttons.

Power light will blink a 2 digit error code like 2 blinks, 2 blinks, a pause and repeat it several times.

Let me know what error code you find and I will tell you what it means.

SD TECH

Green light flashes 5 and then red light flashes 6

I would try leaving the TV unplugged for 30mins so the TV can reset itself.
If that doesn't work, your TV should still be under warranty. I know 95% of come with a 1 year warranty.
The most common problem with Sylvania TVs made by FUNAI, the Backlight Inverter board fails to early in life. ( That's the part that powers the screen)
The Tv can't power up the screen and it turns off automatically. Basically called "Protection Mode" so it protects the other parts inside the TV.

Check the "Sleep Timer" settings. If set to 45 minutes then TV would automatically turn itself off 45 minutes from being turned on. The variance in the "on" times is due to the TV turning itself off after not getting a signal from the remote for fifteen minutes.

Good luck,
Techjoel

wen you go to play a muliplayer game and the second remote won't turn on automatically wen a button is pressed then with the player one remote go onto the wii menu then go onto wii remote settings ( at the bottom of the screen) then click on reconnect press 1 and 2 at the same time on the player one remote after a while it will turn on the do the same thing with the player 2 remote and it should turn on afer a few seconds

hope that helps =]

If you are not a professional Electronics guy,it is beyond you to tackle this problem. otherwise log on to www.free service manuals.com and see the SONY Blink codes and also download the service manual.best of luck

Sound
Sounds like your bulb is nearing the end of its life span you will be needing a new bulb soon.