TV switches off when ever it is turned on.

It will sometimes stay on for a few seconds,It then begins to flicker. Some time it will go for days without any troubleshooting. I will turn it off for a few hours. When I restart it up again, It will turn itself off and the trouble starts all over again. Is the switch causing the problem? HELP!!!!!!!!!

Anthony Gonzales May 11, 2010

Is the lamp Flickering or is the picture flickering? What are the led's on the front doing when this occurs.

1 Answer

William Mueller

Contributor 25 Answers
Posted on Jan 07, 2018

William Mueller

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Joined: Oct 17, 2008

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No the switch if working fine. It is a momentary contact switch. Check the air vents all around the tv, Vacuum the vents if possible so air can circulate. Next there is a protection circuit built in to the system called to power on self test. if test results are ok the tv will go on. If not the tv may go on but flicker on or off and then no tv.
The power supply board is notorious for failing that way. Some can be replaced most have to be repaired to the component level. Try the Vacuum first before opening it up cause it is a lot of work on the dining room table, There is a small power relay that is located on the power board which actually controls the main A.C. to the whole set. I have seen them intermittent before causing that problem but it has to be soldered in place and a lot of electronic components can be destroyed by just you touching it. Be careful, Good Luck, Bill

5 Related Answers

Anonymous

4 Answers
Posted on Oct 26, 2007

SOURCE: MY Hitachi 50v500 is shutdown itself

possibly a bad power supply board.

Anonymous

1153 Answers
Posted on Apr 04, 2008

SOURCE: Plasma tv

Sounds like a Capacitor on the Main PCB

Anonymous

1 Answer
Posted on Dec 14, 2008

SOURCE: TH ETV TURN OFF ITSELF

the cooling fan could be going out

Anonymous

1 Answer
Posted on Feb 11, 2010

SOURCE: My 42HDS69 Hitachi has a recurring problem of not

MY TV KEPT GETTING WORSE EACH DAY ALSO. BUY A CAN OF SPRAY AIR WITH THE EXTENSION SPRAY TUBE. WHEN YOU GET THE TV RUNNING SPRAY THROUGH THE HOLES IN THE BACK RIGHT ONTO THE FAN BLADES OF BOTH FANS. THE DUST WILL FLY OFF THE BLADES. A VACUMM HOSE WILL HELP PULL OUT THE DUST. ALSO SRAY THE POWER SUPPLY BOARD FOR DUST. I APPEARS THE FANS SLOW DOWN WITH DIRT ON THEM AND THE EXTRA HEAT BUILD UP JUST AFTER THE TV IS SHUT DOWN IS CAUSING THE POWER SUPPLY TO BE IN A SHUT DOWN MODE WHEN POWERED UP THE NEXT TIME. BEEN TWO WEEKS NOW AND WORKS PERFECTLY NOW AGAIN.

Anonymous

9 Answers
Posted on Aug 20, 2010

SOURCE: I have a Hitachi 42PD960DTA Plasma tv that keeps

reset tv unplug one minute turn off main power plug in turn on main power try again, if not try different input and source ie dvd player or cable box

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