1 Message

Sun, Sep 26, 2021 7:26 PM

Incorrect Aspect Ratio on Every Channel With New LG TV

This frustrated me for months but I finally solved the problem.

Xfinity Package

We have basic internet package, which comes with basic local channels only (Fox, NBC, ABC, CBS, and local PBS)


Coax from wall to Xfinity

HDMI from Xfinity box to TV


TV Settings

16:9 Aspect Ratio


Wrong / incorrect aspect ratio on every channel. Can't see edges of broadcast on TV channels. But if we watch Apple TV, or any app on our LG such as Prime or Netflix, the aspect ratio is correct and everything looks great. This is what led us to believe the problem is with our Comcast Xfinity box.


We only get regular channels, which on our box are ...

  • 2 (Spanish)
  • 3 (ABC)
  • 4 (NBC)
  • 5 (CW)
  • 6 (FOX)
  • 7 (CBS)
  • a few other miscellaneous channels

The problem is we didn't realize these channels are broadcast in HD under different channel numbers.

  • 702 (Spanish HD)
  • 703 (ABC HD)
  • 704 (NBC HD)
  • 705 (CW HD)
  • 706 (FOX HD)
  • 707 (CBS HD)

We switched over to these and the broadcast is in HD and aspect ratio is correct. All this time we've been watching the non-HD versions of these channels. Hope this helps anyone else with this same problem. I see it reported on a lot of forums.

tags: Xfinity, Comcast, LG, TV, HD, HDMI, coaxial, high definition, aspect ratio, problem, incorrect, wrong

Official Employee


2.5K Messages

1 m ago

 @user_a9d5c7, Thanks for taking the time to explain and post what is happening with your TV service. 


Our team will take a look at your account to make sure all the HD services on the backend of your account is setup. Can you please send us a private message with your first and last name, and full service address? 

To send the requested information:
  • Click "Sign In" if necessary
  • Click the "Direct Messaging" icon 
  • Click the "New message" (pencil and paper) icon
  • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support"
      there. As you are typing a drop-down list appears.
  • Select "Xfinity Support" from that list. An "Xfinity Support" graphic replaces the "To:" line.
  • Type your message in the text area near the bottom of the window
  • Press Enter to send it





4.6K Messages

1 m ago

Those lower numbered channels are only SD (420p).

The HD channels are around the 800 series and higher.  Idf you are not paying the HD technology fee you are not getting HD channels.

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