How much does a main board cost for a7year old vizio tv

SOURCE: my vizio gv42l fhdtv 10a picture flickers like a

you need to check first the power supply board whether the output supply 12-24vdc for the inverter board is stable and not flactuating..you can measure the output voltage with a multitester..you get a voltage output of 12-24 with the inverter board is connected or loaded to the system.be carefull of the high voltage at the inverter board..once the output is stable replace the inverter board or you can measure the output of the inverter be very carefull..the output range upto 500vac.be carefull..if the high voltage is stable replace the lamps...tnx and good luck..

Testimonial: "Thanks again. :)"

SOURCE: My VP504fhdtv10a vizio plasma TV when connect

Logic Control D Board got nothing to do with this problem. This is your main power supply gone bad(usually not the sub power supply). I just repaired my VIZIO by replacing main power supply. Just remove back cover and your board will be right in the middle of the screen. Just get board part/serial # and google it. My best price was through eBay(around $100). Everything is fine now.

SOURCE: number one fuse on my main board is deadl vizio gv47l hd tv 10 amp

If fuse is dead, there must be some reason for that. Some short circuit or so. Without rectifying the fault, if you replace it with an other fuse, the fuse you insert will also blow out, and might make more faults to occur. The rating of fuse will be marked on the printed circuit board itself, very near to the fuse.

SOURCE: VIZIO LED TV MAIN BOARD FUSES

Check and replace the board. It will have some direct shorted component/s on it.

SOURCE: Vizio m550nv backlight won't work

This TV comes with a remote that connects to the TV via Bluetooth. It remembers which equipment is connected to the various inputs, and automatically changes the controls to match the input equipment - really nice! I found that it will control all my equipment, and since it works via bluetooth, you don't have to have direct line-of-sight to the TV. Wish that the bluetooth part worked for my satellite equipement too! Programmable remotes will operate this TV, but depending on how old they are, they may not be able to hit all the features of the tv - our older directv remotes will operate the basic features, but only the newer models will change the input source - so you may want to use the remote that came with the TV. We have smaller kids, and wanted to limit their use of the tv remote, because it has a slide-out keyboard similar to those on some cell phones to make posting to facebook (one of the apps that comes on the tv) easy. Since our youngest is 5, we thought it might be best to keep that remote out of harm's way.

More Detail :
http://tv.babybi.com/detail.php?id_detail=VIZIO-M550NV-55-inch-Full-HD-1080p-120Hz-LED-LCD-HDTV-id126a