Picture blacks out after a few seconds after turning on the tv

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

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Feb 25, 2015 - Uploaded by Awesome Things
JVC LT-46AM73 LCD TV won't turn on after power outage. ...LCD & LED TV Repair - No Image & Blank Black ScreenFlashlight Test - How to ...

JVC wont turn on - JVC - Streaming Video & TVs

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Monitor going black after 2 seconds [Solved] - CCM.net

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Oct 9, 2012 - Brightness goes down, display draws less juice, and you can at least use .... it's the LCD's Inverter ... you have to replace it for it to go back to ... If the screen is turning off every two seconds or so and then it comes ... i turn my tv on it comes right on, but then after a few minutes turns off, .... Digital Trends for LG. No display in monitor
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TV with Black Blank Screen Repair How to Troubleshoot ...

? 3:16
https://www.youtube.com/watch?v=kFdVi2ejfzA

It is a new tv.Take it back where u bought it and trade it in for another tv.This tv have those 2 LCD long inverter boards have problems.These 2 long LCD inverter boards are to help the tv LCD screen panel to have a backlight for the tv LCD screen to produced a picture.

All LCD tvs HDMI cables support both video and audio.Tries another HDMI cable or tries another HDMI hub port on the tv.

Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board,will get picture back.Tries these websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.It a long board in shape.

ther is technical error

i have taken the tv to repair shop a circut board has went on it

Sorry, this has no easy fix. The good news is you do not need an LCD Panel. The bad news is the Video Processor has a problem.
This TV has x3 Boards. The one you should replace first is the one in the middle. If this doesn't fix it, try the one on the right. The Part #s are on the Boards if you wanna try ebay.

Try this

1. Turn ON TV
2. Connect PS3 to TV HDMI input
3. select TV HDMI input for PS3
4. turn OFF PS3 if it is ON
5. Press and hold the [I/O]Power button until the PS3 until you get the "HDMI Detected" message.

Also, this TV has a circuit that deactivates the HDMI if the rear cover is removed. It is possible the HDMI may have been turned OFF. This is reset in the service menu of the TV.

I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions