Learn how to fix poor picture quality issues including pixelation with these troubleshooting tips. Pixelation (squares) observed on the screen represent packets of data which have not been received or were lost in transmission due to a poor connection. This is an indicator of a poor signal which can be caused by a variety of issues including damaged coaxial cables, loose connections, faulty splitters and more.

Try these different solutions to see which one works for you.

Resetting your TV box

Follow these steps to powercycle your cable box

  1. Unplug the power cable from the back of the TV Box
  2. Wait 30 seconds
  3. Reconnect the power cable
  4. After a few moments you can power the TV Box back on and test it again
    Note: Your Interactive Guide will display “To Be Announced” for about an hour after this type of reset, but your picture should return immediately.

Video Example: Pixelation on a TV box

Can't view the video? Click here to view on YouTube.

Reseat the coaxial connections

To fix poor picture quality on your TV you can try reseating your TV cable connection to your TV box to see if your issue may be solved by adjusting how the cables are connected.

  1. Unplug the power to your TV Box
  2. Unscrew the coaxial cable connection from the back of the TV Box as well as at the wall outlet
  3. Reconnect both cables


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Replace the coaxial connections

Follow these steps to replace your coaxial cable going into your TV box.

  1. Unplug the power to your TV Box
  2. Unscrew both ends of the coaxial cable.
  3. Connect the new cable to the rear of the cable box labelled: RF IN or CABLE IN, with the other end of the coaxial cable connected to the cable outlet at the wall
  4. Plug in the power for the TV box

Bypassing the splitter

  1. Unplug the power to your TV box.
  2. Locate any cable splitters or extensions that are on the line by following the coaxial cable from the back of your TV box  to the cable outlet on the wall.

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  3. Bypass the splitter by connecting a coaxial cable from the rear of the TV box (at the RF IN or CABLE IN port) directly to the cable outlet at the wall.
  4. Reconnect the coaxial connection on both ends.
  5. You may be required to replace the splitter if your picture quality improves after bypassing the cable splitter. (You can obtain a splitter from one of our Shaw retail locations).


When troubleshooting a TV box on a splitter, be sure to only disconnect the line between the TV box and the splitter. If you disconnect the main line from the wall you may interrupt other services that are sharing the splitter. 

Additional troubleshooting tips

If the above solutions did not work, consider trying the following:

Connections with extended coaxial cable lengths can experience poor signal issues.

  • The longer the cable is, the weaker the signal will be. The signal may become weaker the longer the coaxial cable connection is due to attenuation. Attempt to replace the coaxial connection with a shorter line if you feel yours may currently be longer than required.

Check any additional TVs connected to a TV Box in the home;

  • If you observe the pixelation issue on all of your TVs in the home, there may be damage to your main cable connection or may indicate an area issue

If you have a wireless 4K TV box you may have to consider other troubleshooting steps

  • Try moving your 4K TV box to a different spot in the house to see if issues may be caused by interference. See our wireless 4K box FAQs for common questions.

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