I have a 42" lcd Vizio TV. My screen is completely black but you can see there is light in the back of the set. I cannot access the menu nor can I turn off the power without unplugging the unit. What do you think the problem is and how can I get it fixed. I have the TV for 2 1/2 years

replace the led lamp inverter board

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Sounds like the back light is going out or a connection to the back light has loosened of the years

Vizio TV model E371VL turned on ok and had tv show on ch.4.
Turned on the DVD player and put movie dvd in and closed tray.
We have done thhis numerous of times and never had a problem.
This time " HDMI " was showing on top right of black screen,
then " No Signal " came up on screen, then went completely black screen. Called Vizio, they had me power off and unplug set.
Push and Hold power button on TV for 30 sec. to reset.
Replug set and Vizio (lighted) on lower front of set lighted normally dull orange. Pushed power button on remote and when set did not come on, then push main power button on side of TV. Nothing, no White " Vizio " from orange light. Is this a power supply (0500-0412-1020) problem ? Thanks, Sidney ([email protected])

It could be several things, but I would lean towards a defective main board. But you also may want to check power supply for correct voltages.

when it goes dark can you pull up tv menu if not or ch number take a flash light and press menu on side of tv or remote and shine light on the screen, look really close and if can see any images such as letters or number then very possible have a defective lcd panel

Model?

there are two possibilities to this problem. First and cheapest way is to replace the main board. Second, replace the inverter board. This is the boards that are mounted vertically on both sides of the TV.

Just try to reset so picture will back to normal again, some LCD TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.
1. Unplug the LCD TV power cord from the power outlet.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the LCD TV power button for five seconds.
4. Plug the LCD TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the LCD TV is responding again.
6. Turn off the LCD TV and reconnect the devices.
7. Turn on the LCD TV.

Hope it may help you;

Regards;
VOTIT

May be that the back light is not working. could be the inverter board is bad or the back lights. both could be expensive to repair and parts hard to find since these sets com from China