Television After watching tv I turned it off...3 hours later, when turn it on, after 5 or 3 sec...it suddenly switch itself off and the standby/wake-up light began blinking...plz help what's the problem?

Replaced the high voltage transformer. It is arching.

The flashing light red power light should only stay while the fan cool down for about 1 minute after a power off (remember to always wait before unplugging the TV so the lamp can cool down with the fan). Does that flashing start right away after plugging back the TV after an hour of letting it without AC power.

The red light should flash no longer than 10 sec. This prepare the light to be turned on. If all is OK the green should stay (no longer flashing) and the sound and picture come on.

As for the lamp flashing, i bet it's only 1 time each 5 sec? Or do it group many rapid flash each 5 sec?

Things that can be wrong:
-the fan lamp

-the lamp is not proprely inserted (wait an hour before manipulating it to be sure it cooled down, and use glove to not put body oil on it).

-Lamps is defective and is not operating properly so you can't get to the usual on screen message that recommend to change the lamp.

Replace the flyback. You need the 259296 flyback replacement kit which has the flyback related capacitors and the CD with detailed instructions. The kit is available at www.tvrepairworld.com

Symptoms of a Defective or dying Power supplies on LCD TVs.
1. Light(s) on the front panel are behaving not normal example, blinking, amber color or
not steady, fainting, etc.
2. TV not turning ON properly.
3. TV turns OFF by itself.
4. Needs to be unplug to many times to make it work.
5. Humming or high pitch noise heard through speakers or at the back of the TV.

I repair these power supplies. Write to [email protected] if you require further assistance.

The TV's power supply capacitors probably went bad.

Check with a mobile tv repair co. to see if it is worth fixing.

http://www.usersmanualguide.com/

Probably vented caps, or high voltage circuit failure. Sugg, replace tripler.

alright guys...blew a bulb....fixed that. still didint work...found out it was ballast...replaced that. tv worked for a month..all the sudden hdmi input didint work id plug in my playstation and screen would turn green and say "hdmi color has been corrupted" im thinking wtf? so a week later it works fine then just turns off in middle of watching espn... comes back on an hour later...only to turn off again...it just turns black for ten seconds then just turns off and the red and green lights blink at intervals of one second....replaced a bulb..not that, same problems.......when the tv comes on for the ten minutes before it quits working the pic and sound are great i just dnt get it...is it shorting out? color wheel bad? a fan?

As for the 10-20 secs ,tv turns off .......I have one of those ......Im still trying to fix mine, without buying a new board ,I will post results!

Have tried checking if the Power Plug is fitting tightly in the Power socket? Could be that it is loose?