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You may have a problem with the front panel. There is no harm in removing the front and sending it to a service location to check. If you want to go ahead and order, then call 18005825825. They will help you order it.
you either have a faulty power supply or faulty main board. Vizio power supplies on the older sets are pretty decent. It's usually the main boards that go. These older main boards tend to be pricey so it may be better to buy a new set.
That blue K means you are in the service mode. Unplug your set and wait 30 seconds. Then at the same time you plug it back in, you need to be holding the volume down button and the input button.
The TV should turn back and the blue K should turn pink. Once this happens, press the volume and channel down button at the same time. A menu should come on the screen. With your remote, press the up arrow to reach the nest page. The first option should say INIT. Arrow to the right and hit enter. In a few seconds your screen should turn green and say success. Unplug the TV and wait 30 seconds. Plug the set back in and turn on your TV. You can then set your set back the way you want.
I purchased the RCA Home Theater System RTD315WR less than a year ago. Just a little over a month ago, the door would not open leaving my DVD still stuck inside. Upon many attempts trying to retrieve my DVD NOTHING HAPPENS. As a matter of fact, the standbye light comes on, and when I push the button the light tunrs off completely and NOTHING happens. Since I no longer have my receipt or box, Wal-Mart would not exchange it. I am in the process of writing a letter to Wal-Mart Headquarters in hopes they will assist me in this matter.
This set was designed in such a way that when it is unplugged and plugged back in the LED will blink for around 90 seconds and then stop. During that time you cannot turn the set on. This is the amount of time it takes for the Digital Module to boot up. These units have a problem with some capacitors going bad in the Digital Module and when that happens the LED never stops blinking. You need to contact a qualified repair shop to get it repaired. I have repaired many and the cost is around $250 to $350 depending on where you live. That set is well worth the repair cost.
With the main unit turned off, press and hold [REMAIN] on the home theater's remote for 4 seconds. (The REMAIN button is directly under the 7 button). Once held down for 4 seconds, the Volume Indicator on the main unit will turn on for 1 second. Release the [REMAIN].
Press the [RESET] on the back of the Wireless Receiver 2-3 times. The Standby/On LED on the front of the Wireless Receiver will blink 3 times
Turn on the main unit. The Link LED on the wireless receiver will light up if process is done correctly. The front of the main unit will no longer say REAR CHK and the rear speakers should now function correctly.
You might want to try the same solution for the V-Chip (this might be the same thing as the child lock, it is worth a try) protection to see if this will help:
Changing V-Chip Settings for MV13L3, TV/VCR Combo 2001.
-Unplug your tv for 1 minute. -Plug your tv in and turn it on. -hold the volume down button on the tv at the same time you hold the "0" button down on the remote. This will bring up the "Set V-Chip" blue screen. -Enter "0000" for the password and hit enter. Enter "0000" to confirm the password and hit enter. -This will bring up the V-Chip set page. From this page you can: Turn Off the V-Chip, Change the Limits for viewing, etc. -If you turn off the V-Chip setting, you will not have to deal with this problem again.
I found this to work on my Toshiba TV/VHS combo MV19M4 after trying others suggestions that had worked on similar models but nothing worked on mine. Maybe it will work for yours. Follow these steps:
1: Unplug the TV for 1 minute then plug it back in.
2: In the menu select "TV Set Up".
3: Move the blinking block to beside "V-CHIP Set" BUT DO NOT SELECT IT.
4: Hold in the number 1 button on the remote.
5: Hold in the volume down button on the TV.
Your TV will turn off. Give it a few seconds to reset itself and then turn it back on and you will have to completely reprogram your settings. When you go to the V-CHIP settings it will ask for your new code.
NO SUGGESTION TO YOU, BUT MINE JUST STARTED DOING THE SAME THING TODAY. IT STILL WORKS CORRECTLY WITH THE REMOTE, FOR NOW! I CALLED DUAL. THEY OFFER AN EXCHANGE FOR OUT OF WARRANTY UNITS, BUT THE EXCHANGE COSTS MORE THAN I PAID FOR THE ORIGINAL. I REALLY LIKE THE FEATURES OF THIS UNIT, IT'S UNFORTUNATE ABOUT THE NON-REPAIRABLE VOLUME CONTROL