Tv comes on to vizio logo but does not do anything else via remote or on tv itself

The one logo is coming from the set top box that is supplying the signal, cable box, satellite box, Android box etc. Look for Mute on that remote, or cut the power to all your devices by removing the wall plugs. Wait 15 minutes and plug back in.

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Where did you get your used boards from Jerrard?

call a local repair shop or just buy a replacement set

Have you got any other remotes in the room that could be faulty or interfering with the WDTV.
Also:
try resetting via the side button with the unit on.
resetting to factory defaults via the internet menu.
unplugging the unit from power for some minutes (not seconds).
Do all the above one after the other before using the WDTV.
Sometimes this helps particularity after a firmware update.
The input source of the TV can be changed either through the supplied TV remote or physical buttons located on the TV itself.
Changing input source using the supplied TV remote.

1. Press the INPUT button on the supplied TV remote.
2. The input source screen will be displayed on the screen of the TV.
3. Using the arrow keys, choose one of the input sources on the input selection screen.
4. Confirm the selection by pressing the Enter button.

Changing input source using the physical buttons on the TV.

1. Press the INPUT button located at the back of the TV panel.
2. The input source selection screen will be displayed.
3. To scroll through the options, press the INPUT button repeatedly. The last highlighted option will be chosen after few seconds.

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Vizio logo is an indicator that the tv is live n changes to white that the screen is on meaning if no change to white the smps switch mode power supply board ain't switching the mother board....diagnosis is its MOSFET transistors need replacement or the smps board n ya tv will be fine

Checking the input is a good idea. This is going to be the button on your remote labeled INPUT or SORCE. The fact that you have the Vizio logo coming up says your screen is good. The other thing I would check are you connections by replacing cables with know working ones.

My Vizio E322AR White Vizio Light comes on when plugged in, then slowly fades to "Off". I unplugged and replugged - same. I held down the power botton on the side, and plugged in... same. Vizio light comes on (White) and over 5 seconds or so... fades out to nothing.
Remote doesn't do anything, buttons on the side don't do anything.
Going to pull the back off and look for bad Capacitors, and test fuzes for continuity. Wish me luck ... will report back later with results.

Usually when a TV fails to turn on properly a lamp will flash a number of times which with the correct info guides you in the direction of the fault.

Easy!
Still have dish service? their box? Go to box's menu "setup" option, choose "remote control". "On screen" logos will guide you through the procedure.
No box, no service? Knock on your neighbor's door and ask him to look at "menu". find your brand, write down code(s)! Last resort: call dish customer service and ask them to program your "clicker" they are all 'learning" and will be programed via "box'. Be creative! Or, worst case: get universal remote and set it up for both: dish and TV!
Luck is on your side!