Tv wont turn on

JVC LT-46AM73 LCD TV Won't Turn On - YouTube

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JVC LT-46AM73 LCD TV won't turn on after power outage. ...LCD & LED TV Repair - No Image & Blank Black ScreenFlashlight Test - How to ...

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what is the model of your tv?

does the vizio logo light up orange ? If so and it doesnt turn white then the main board would be suspect. If the logo doesnt turn orange when its pluuged in then its the power board. You can get either board from www.tvrepairworld.com

The TV needs a fairly stable and well filtered 12V power supply. A jumpstart box is 12V, but is I seriously doubt that it is anywhere near filtered and stable, so most likely you would smoke the TV.

Hooking the TV directly to a 12V battery is just fine, as long as the battery has enough current to run the TV.

Try a power drain:
1. Unplug the TV's power cable so that the TV is not grounded to the house.  Do not simply turn off a powerbar if one is in use. 2. Press and HOLD the TV's own power button for one minute to drain the internal capacitors. 3. Plug the TV back into a wall outlet versus a powerbar, if one is in use and see if this makes a difference.
If the TV does not turn on, are you able to see any indication from an internal LED light in the back of the TV?  If not, the problem is usually with the power supply. If you do see a LED light anywhere, then you know the TV is getting power but the TV's mainboard is at fault.  In either case service would be required if the power drain does not resolve this.

Bad Capacitors in Power supply. IF doesnt help changing Capacitors Replace Power Supply Board

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.

try selecting the dvd or tv modes ... if that doesn't help , reset the system and start all over.

wont turn on red light just flashes?
On my samsung flat screen tv when you are watching the televison there is no red light on the power button but when you turn the television off the red light stays on all the time? what can I do to turn this light off?