Black screen was working fine, put TV on, black screen but sound works. We have checked connections, tried to unplug and reboot and checked the remote to see if the mode changed

Patience may be the key--It may be substrate charge phenomenon--
Disconnect everything from the TV, including power cord and all ins & outs and wait awhile (3 days is sufficient) to let the internal charges bleed off. Reconnect TV and try it again. It sounds like a power surge (or lightning strike nearby) jammed a temporary "substrate charge" onto TV's circuitry.

test with another remote.

buy a cheapy remote at dollar general

and see if you can connect it to the tv with code number

code numbers on internet

same problem all set to replace TV but tried another source DVD instead of dish and it was fine. Possible the cable (cheap HDMI) but reboot the dish (hard) pull the plug and fixed it up, probably the HDMI connection at the source or the TV (or the cable)

I had a similar problem after having a Vizio for 2 and a half years. I left the room for a minute, i came back and the screen went black. I didnt hear an arcing sound though. There was still power to the unit and you could see that the back light was working, just no picture, no sound, and you couldn't use any of the buttons. The only way to turn it off was to unplug it. It would then start up, with the Vizio logo going from orange to white, and then do the same thing all over, no pic or sound. I would check the ceramic fuse first on the board that gets power from the plug.

HOW I FIXED MINE: I ordered a new "main PCB" from tigerdirectparts.com (you can also use searspartsdirect.com). This is the circuit board with all of the inputs on it (hdmi, cable, etc.) I opened it up, disconnected the old one, put in a new one and now it works fine.I used both serial numbers on the board to search for it online. It cost me $144 to do it, but that's better than $450 for a new TV. My tv is the vx32l hdtv10a. I hope that helps.

For your remote problem, mine has stopped working a couple of times and here is what Sharp had me do: Take the batteries out of the compartment. Next press and hold down the power button on the remote for a count of 30 seconds. Return batteries and the RC should be reset. As for the other problem, I had a similar thing happen tonight, hence I am on this site looking for help. My remote quite working, so I did the above, to no avail. I noticed the channel number box was frozen on the screen. I could not turn the TV off manually and had to unplug from AC. I plugged it back in and got sound but no picture, just that bluish dark screen. TV would not turn off. Then I got nothing, no sound, no pic. I left the TV unplugged for several minutes, 5 or so, plugged it in and it did work and is working now, RC too. You might try unplugging it for an extended time.

If you are connected on av2,make sure it is not on av2s,as this will give a b/w pic

Go to the tv settings and check to see if you blocked any incoming devises. If you did block the devides, your tv will not read the wii

The problem with the black box happened to me. I had pushed the subtitle button on my remote by mistake. Interestingly enough, as soon as I pushed the SUBTITLE key again, on the remote, the black boxes disappeared.

It also says CC which means closed captioned-- So the bottom on my remote is Subtitle, and then on the subtitle button is cc...

I hope this helps

The black box is there because your closed captioning is on and set to text mode. Some channels send the signal even when there is no actual text to display. You can get rid of it by either turning off closed captioning or changing it to CC1 or CC2 mode instead of text. If you can't find those settings, then restore factory settings as directed in your user manual.

have you tryed to find the "lamp" on it ... it sounds like your lamp has gone out you can get them from walmart or best buy or another type of electronics stores... they are normaly cheap compared to the price of a new tv and all it is is a light bulb for your tv... good luck to both of you