My big screen tv keeps changing channels. when i set it on one channel

Try changing channels with the button on the TV to make sure the remote is not bad. Sometimes one or just a few buttons on the remote will quit functioning. It is usually the ones that are used the most. What channel is the TV on? If it is 3 or 4 or one of the aux inputs; it may have been told to stay that way because the channels were changed by a cable box. Go to set up and scan channels into memory. After it has started, do not stop it until it says on the screen that is finished. If you stoop it before it has completed the scan, the TV will keep its original program. (one channel)

This can happen when there is radio interference near the coaxial cables. Sometimes the interference is behind walls. The solution is to try a different combination of modulation and channel than what the DISH receiver is current set.

The DISH menu screen for this setting is Menu-6-1-5. With dual-tuner receivers, typically "TV 1 Out" is the TV that is connected in the same room as the receiver is located. "TV 2 Out" is the tuner that is fed to the remote TV via backfed coaxial signal.

All that needs to be done is to change the channel and mode going to the effected TV to something different. If your channel/mode is currently set to Air/60, try changing it to Cable/73. When you change the mode/channel in the DISH receiver, you need to set the remote TV to the same mode and channel.

Keep in mind that with some TV companies like VIZIO, they call their "Air" mode "Antenna". With VIZIO's the TV must be set on TV input and then go into the Menu to the Settings, Tuner Settings. Change mode type to match what you are trying on the DISH receiver, exit the VIZIO menu and manually enter the channel number.

Eventually with trial and error, you will find a mode/channel combination that isn't effected by your particular environmental interference.

Usually this happens to my set when I am in HD cable channel mode after being on a non-digital ANALOG channel.

I basically reset the TV by changing to a DIGITAL cable channel -- stay on that channel for ten-twenty seconds -- then I switch back DIRECTLY to a HD channel (key in channel number directly on remote).

TV works fine -- seems to be a glitch when the TV changes modes from Analog to HD

I had this exact same issue just yesterday. Channel info would flash intermittently. While set was in this mode, could not enter menu, change channels, etc. from remote or front panel controls. Similar to tjh492, I thought it might be an overheating issue. But unplugging the Viera and waiting for set to cool made no difference.

I then remembered that this issue popped up the instance I surfed to a particular channel (FWIW, 26-3 "Me Too" on Comcast here in Aurora, Illinois, USA). I had a hunch that there might be an issue with the signal on the channel that prevented the Viera from properly syncing, so I decided to unplug the antenna cable. Once I did that, the channel info displayed steady. I was then able to change channels (of course screen was blank as antenna cable was unplugged) and enter the Viera menu. I immediately went to channel set-up and manually removed channel 26-3 from the channel list. After reconnecting cable, Viera was back to normal. Since I'm not a big fan of "Me Too", problem solved :)

Not sure why a digital channel sync issue would effectively make the Viera remote and front panel controls inoperable. Pure speculation, but it could be that the Viera microprocessor was overloaded trying to sync to channel and this prevented any interrupts from remote or front panel controls.

try to check the settings of your tv if all ok. if ok its a problem in your TV circuit board try to resolder maybe some sections is cold solder. if not its a service mode. trust me!

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.

It sounds like a stuck button or switch. What happens when you hit the channel DOWN, does it still keep scrolling down?
Is this with or without the remote?
Have you tried it with the remote and or the TV?

Let me know whether you are changing the channels with the remote or the buttons on the tv and I can try to give you a couple more suggestions.
Mac =)

keep pressing the button called ARC until you get standard...let me know if it worked

Shut off the closed captioning and your problem will be gone.

I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

You may have a control button sticking either on your remote or on the front panel of your set. I have run in to this on several sets. When this happens, some really strange things will happen including problems like you're having. Stargazer