When powered off, TV turns on and displays white screen, then shuts off

Easiest TV repair - How to Fix Power [TV turns off, freezes ...

? 6:44
https://www.youtube.com/watch?v=OKklZpTGBGU
Apr 27, 2014 - Uploaded by Keith Fox
I demonstrate in this video how to repair a Sanyo by swap out the... the Sanyo DP47460 that I'm having an issue with. after ~ 40minutes of watching, if I attempt to change the channel or adjust the volume, the picture/screen freezes. ... After ~ 20 seconds, theTV will automatically shut off, then turn back on.

SAMSUNG TV REPAIR- TURNS OFF RANDOMLY - YouTube

? 9:24
https://www.youtube.com/watch?v=7Rj22VNhKXg
Jun 25, 2012 - Uploaded by Tampatec
EASY HOW TO FIX SAMSUNG TV- TURNS OFF RANDOMLY Clicking ... Hi, I've got a Samsung LED TV that switches off after20 seconds and remains off. .... after about couple of minutes, is this the same problem with the tv in the video? .... 10:32. How to repair a Samsung LCD TV with a flashing standby ...

TV Turns On, Backlight Inverter Immediately Turns Off TV ..

Fixya is a free tech support site. There is mo shop. No replacement parts.
If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.
LCD TV Repair No Power Power Supply Common Symptoms Solutions How to...

Replace all busted capacitors in power supply board inside.

Hi,
It only tells us that the inverter cable needs to be reseated or replaced. It's not an expensive repair so fortunately you can consult any local certified technician and have them work on this.

This type of failure could be in the LCD controller board or the power supply might not be providing enough voltage to the main board and LCD controller.
Let me know if you require further assistance locating the boards or part numbers.

I posted to your problem with a similar one. I was able to get my PS3 to work by:

1.) Powering down both the PS3 and ViewSonic LCD
2.) Unplugging the power cables to both PS3 and LCD
3.) Waiting at least 10 or more seconds
4.) Plugging in the power cables to both PS3 and LCD
5.) Turning on the ViewSonic LCD
6.) Turning on the PS3 and holding down the power button until the beep

After this sequence I heard the bootup audio and the menu appeared on the screen- which detected the HDMI connection to my LCD.

Very odd.. I've had my PS3 in the same place for months and just today this happened.

I wanted to post my success. Best of luck!

Seth

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

I decided to read this and I am not exactly 100 sure what the proplem is. I did want to offer a suggestion though. If you are having problems with both the screen and an external monitor, the problem may be with the graphics hardware. If you have a card, it may need to be replaced. If not, i'm very sorry. The motherboard may need to be replaced. Hope this helps.

Hi there.

The backlight inverter board is defective.
Replace it and your problem will be solved.