One day tv was working fine next day no pics or sound.

Possible backlight driver board , check with flash light at back preferably thus opening somewhere to see if there is a pic but you can't see without backlight . Failures usually caused by led failures putting to much stress on backlight output.

Sounds like ( pardon the pun!) one of the TVs chops on the circuit board are gone. Costly enough repair, how old is the T.V? Is it under warranty?

having problem with display . your lcd is get damaged change it with a new one

Most likely a CRT Issue, or Dead Backlight; tlking to a local service man should get it up and running again for fairly cheep

I had the same problem, stuck in a hotel room for 2 days. When I held down the button, next time I turned it on, I got the same prompt with using HDMI output, said yes, and screen went black. However, a screen then came up asking if I could see the image or not, but it has a 30 second time limit before it saves those setting, you have to click "No" on this screen, and it will drop the resolution to 780p instead of 1080 and it should work! Make sure you're paying attention so you don't miss the screen!

Check and see if you have the sound settings to Stereo, and Audio to Main, not SAP.
Try the TV with a DVD player, does that work?
Are you using a cable TV box? Try the TV connected directly to cablevision. If that works, get a new cable box.

The TV may need a repair technician if the above tests don't work. Audio is generally not user serviceable without a lot of electronics skill, due to parts size and circuit complexity.

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.

We are forming a group of consumer who are taking action. HP sold TV's with known problems. Contact us: [email protected]

Yep, your mainboard is damaged.

Replace it and your tv will work again

Did somebody mess with the tv inputs?  Or Tv settings.  Make sure the green blue, red, cables are on good from the back of the tv set.