Asked by: Dansk Riedelsheimer
music and audio tv and film podcasts

How do I fix Comcast weak or no signal?

Last Updated: 5th January, 2020

41
Re: Weak or No Signal
Confirm you input selector on the TV is still on that HDMI input, and try unplugging the TV from the AC power for a minute so it can fully reset. IF you have another HDMI device like a blu-ray to try that HDMI input on that TV might help narrow it down.

Click to see full answer.

In this manner, why does my Xfinity say no signal?

First, ensure TV's input is on the cable input. If that is okay, reboot the cable box to reinitialize service. If that does not work, call into Comcast at 1-800-266-2278 or 1-800-934-6489 and speak with a CSR about sending authorizations to that cable box.

Furthermore, how do you fix the TV when it says no signal? UNPLUG THE CABLE GOING FROM THE TV TO YOUR CABLE OR SAT BOX -Remove the HDMI cable or other cables from your Cable TV or SAT set top box. -Keep the cable unplugged for 2 to 3 minutes. -Plug the HDMI cable or other cables back in. -Give it some time for the Cable or SAT box to get the signal and initialize.

Subsequently, question is, what does it mean when TV says weak or no signal?

The No Signal, No Source or No Input message will appear on your television screen when the television is not receiving a signal from your Digital Box. This is often a result of either the Digital Box being powered off, not being properly connected to the TV or if the TV is set to the wrong input.

Why is my cable signal weak?

A weak or inconsistent cable TV signal usually indicates that something is wrong with the wiring or the signal itself. If you have a loose connector, the signal will leak and you will have trouble viewing channels from time to time, or you might have trouble with Internet access. Make sure each connector is tight.

Related Question Answers

Knarik Izeta

Professional

How do I fix no signal?

If the "No Input Signal" error still appears, the problem does not rest with the cables or the monitor, but with your PC. Open your PC case and locate your video card. Remove the card and then replace it firmly in its slot or, if possible, insert the video card into another slot on your motherboard.

Mouctar Pedragosa

Professional

Why does my TV say no signal when HDMI is plugged in?

The No Signal message indicates a problem with the cable connection or the external device. Disconnect the HDMI cable from the TV and move it to an alternate port. Plug the device back in, and power the device back on. Change the TV to the new HDMI input to see if the issue is resolved.

Mattias Choudhary

Professional

How do I know if my cable box is bad?

The channel might not change, the image might be frozen, the playback features may not work, and so on.
  1. Step 1 – check for power. The first thing you have to do is to check if the television and the box are receiving power.
  2. Step 2 – Check if the TV is working.
  3. Step 3 – Check the connections.
  4. Step 4 – Reboot the cable box.

Jonnathan Tilgner

Explainer

What input should TV be on for Xfinity?

Re: what channel should my tv be on for cable
If it's a little DTA box, or an old SD TV, and using coax, then use channel 3, as mentioned. For a full cable box, try to use an AV input (the yellow/red/white) cables, usually INPUT1 on many TV's. For HDTV, you'd typically use an HDMI input.

Nikita Haass

Explainer

How do I reboot my Xfinity box?

To Reboot Your TV Boxes:
Ensure your cables are tightly secured. Press and hold the Power button located on the front of the primary DVR TV Box for 10 seconds. The TV Box should automatically reboot.

Alana Uzziah

Explainer

How do I troubleshoot my Comcast cable box?

Having trouble with your Xfinity TV service? Try these tips.
  1. Check the power on your devices. Make sure your X1 TV box is turned on.
  2. Check the connection of your cables. The video cables between your TV and X1 TV box should be firmly connected.
  3. Try powering down your TV and X1 TV box.

Leydi Paguay

Pundit

Why is my cable box not working?

Turn off the Set-Top Box by either using your remote control or by pressing the POWER button on the box. Carefully unplug the Set-Top Box power cord from the electrical outlet or power strip if you're using one. Plug the power cord back in. The Set-Top Box will automatically reboot – this may take a few minutes.

Eleodora Lenoir

Pundit

How do I send a refresh signal to my Comcast box?

Performing a System Refresh on X1
  1. Press the A button on your remote control, or visit the Help section in Settings.
  2. Highlight the System Refresh tile, and press OK.
  3. Please remember that performing a System Refresh will interrupt all X1 TVs and recordings in your home for up to 10 minutes.

Syuzanna Olloqui

Pundit

Why is my TV suddenly saying no signal?

First check that your TV is set to the correct Source or Input, try changing the Source or Input to AV, TV, Digital TV or DTV if you haven't already. If your “No Signal” message is not due to incorrect Source or Input being selected, then it's most likely caused by a set up or antenna fault.

Deiene Keen

Pundit

How do I test my cable signal?

Point A being nearest to your TV and Point B being the other end of the cable.
  1. Disconnect all TVs.
  2. Short point B (so connect the signal and shield with a wire)
  3. Test point A with a multimeter set at Ohm.

Xim Castens

Pundit

What does no signal mean?

"No Signal" is a message coming not from your computer, but from your display device, indicating that it has nothing to display.

Lizabeth Thoma

Teacher

Why does my Samsung TV keep saying no signal?

You may see this message when connecting any device, an antenna, or a direct cable line. No signal or Signal cable error appears due to connectivity issue. Make sure that the source causing the error message is connected properly. Try Powering off the TV, Unplug the Cable wait for 10 minutes and reconnect.

Mourtalla Nasati

Teacher

Why is my antenna not picking up channels?

Possible causes: Once you have properly installed the antenna, changed the input on your TV to 'ANTENNA', and run a channel scan, you should be receiving at least some of your local channels. If this is not the case, the reason could be one of the following: There is not a clear line of sight to the broadcast towers.

Wilburn Zabelberg

Teacher

How do I get more channels with an antenna?

Here are my hints and tips to help you get the most channels with your indoor antenna.
  1. Experiment with Different Locations in Your Home.
  2. Use a Longer Cable To Reach That Window.
  3. Face it Towards the TV Transmitter Towers.
  4. Lay Your Antenna Flat Horizontally.
  5. Move it Higher Up (Highly Recommended)

Apolinaria Czajka

Teacher

How can I check TV signal strength in my area?

You can check your signal quality in the settings menu.
  1. Bring up the menu with your remote.
  2. Select Settings.
  3. Go to the Signal & Connection area and select Signal Quality.

Dmitrii Treindel

Reviewer

Do HDMI cables go bad?

The one caveat to all this is that while HDMI cables don't simply go bad over time– they may need to be replaced one day. There are physical damage reasons that that might happen, such as extreme force shearing the cable in two, or damaging the internal wiring.

Chenxi Clavo

Reviewer

How do I check signal strength on my Samsung TV?

How do I check the signal quality on my TV?
  1. Go to the Support section in Menu. Depending on your model, you can find this either by: a) pressing the Menu button on your remote, then scrolling down to Support. OR.
  2. Now select Self Diagnosis.
  3. Choose Signal Information.
  4. A Signal Information page will now appear.

Ramesh Hilbert

Reviewer

What does HDMI no signal mean?

If you're getting TV or monitor no signal issues when you connect them to your PC via HDMI ports, don't worry. You're not alone. The No Signal message means that the TV or monitor isn't getting any input from the currently selected source.

Vyara Diagne

Supporter

Why does my Roku say no signal?

If there is no signal whatsoever and your Roku still isn't responding, the issue may be that you're using the wrong power adapter. Make sure that it's the one that came in the box with your Roku player. Original AC adapters always work best. And using third-party adapters can cause issues with power and loss of signal.