Q. I turned on my TV today and the screen was all blue. No channels. No video. Nothing. What can I do? — Candy, Wilmington, North Carolina.

Don’t panic, Candy. There are several things you can do to fix the picture, or at least determine if the problem is your TV or something else.

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1. Before you do anything, make sure your TV’s receiver is on and your cables are connected securely. You would be surprised at how often cables get jostled by a pet, kid or something else, and become loose. If the receiver is on and the cables are okay and you still get a blue screen or a ‘No Signal’ message, go to #2:

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2. Pick up your remote and hit the Input or TV/Video button to see if there’s a signal coming from another source connected to your TV, such as a Blu-ray player or game console. For example, if you have your cable or satellite receiver connected to the HDMI1 port and it shows a blue screen or No Signal message, hit the Input or TV/Video button until it goes to another HDMI port where you have another device connected. If the second HDMI port also shows a blue screen — and you can’t find a signal or picture or any other port — go to #3.

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(Note: If you only have one device connected to your TV, such as a cable or satellite receiver, try connecting it to a different HDMI port. If the second port still shows a blue screen, then go to #3.)

3. Reset the receivers and your TV by unplugging them for about 20 seconds. During this time, also take the HDMI cables out. Then re-plug everything and reconnect your cables. If you still don’t get a picture, go to #4.

4. At this point, we’re running out of options. If you only have one device connected to your TV, it’s possible the device is the problem. For example, you may need a new cable or satellite receiver. But if you have multiple devices connected to your TV, and you can’t get a picture on any HDMI port, then it’s likely not a device problem. It’s probably an issue with your TV. I would call your TV’s customer support team and ask for help.

One last note: If you have an A/V receiver connected to your TV, make sure it’s programmed correctly for video. It’s possible the A/V receiver’s Video On feature was turned off by an electrical surge or something else. This happened to me once — I turned the Video feature back to On and suddenly that bad blue screen was gone.

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Have a question about new TV technologies? Send it to The TV Answer Man at swann@tvpredictions.com. Please include your first name and hometown in your message.

— Phillip Swann
@swanniontv