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Poor Picture Quality on LG Ultra HDTV

Troubleshooting TVs Last Updated 01/18/2017
Poor Image Quality on LG UHDTV

LG Ultra High Definition TV (LG UHDTV) offers a super viewing experience using advanced technologies to deliver video contents in richer colors, smoother motion and elevated brightness. Ultra HDTV is unlike HDTV which produces video contents at a resolution of 1080P. Ultra HDTV delivers video contents as 4K content with a resolution of 3840 x 2160 (2160P), this is four times the resolution of a full HDTV.

If the image quality you see on your screen at home is presently not as eye-catching as you expect like a video demonstration you saw at your local store, there are some quick fix for that.

Reasons for Poor Image Quality

  • Watching video content of lower resolution (1080P or lower)
  • Your HDTV settings not being setup properly
  • Using cables that cannot support UHD videos
  • Your external device does not support 4K output or
  • The video output settings from your external device are not configured properly

Let’s troubleshoot your UHDTV to bring out the best of your TV

What Type of TV do you own?

First Step - Test for 4K Content

Your LG UHDTV uses the newest technology to display your video content in stunning 4K resolution but presently some of the video contents that are available online are still in HD or even lower resolutions.

Nevertheless, your Smart UHDTV is designed to automatically scale this lower resolution contents to near 4K. While the content is being scaled to a 4K resolution, this process can cause some of the edges and details in the image to have a smooth or soft look compared to the sharp and crisp image you saw at the retail store.

First Step, we need to test your TV with a 4K Content

After this test, if your TV displays as you expect with the 4K video, then your UHDTV works perfectly fine and you have only been watching lower resolution videos.

Still having Poor Image Quality? Yes, Image is Still Poor

Next Step

Second Step - Home Vs. TV Mode

Is your TV setup for Home Mode?

If your TV is setup to Store use, change it to Home Mode using the following steps below

Once you have changed your TV to Home Mode, now navigate to Youtube and try playing a true 4K video content again.

Still having Poor Image Quality? Yes, Image is Still Poor

Next Step

Third Step - Single or Multiple Devices

The poor image quality on the UHDTV may be caused by the incoming signal from the input devices or cables connected to your Television

Do you experience the poor image quality on a single connected device or on multiple devices such as Gaming Console, Blue Ray Player and PC?

  • To check your cable connection,

    1. Make sure all your cable ends are securely connected at both ends of the Device and your Television
    2. Make sure the right color ends of the cable goes into the same matching color end of the other device
  • It is more advisable to use one connection cable over another. HDMI cables are best preferred over Component cables while Component cables are more preferred over Composite and Coaxial.







    480P through 4K UHD

    Blu-ray, Cable/Satellite Box, Newer Game Console, PC/Laptop

    Component (Red, Green, Blue)


    Up to 1080 (usually restricted to 1080i or lower)

    Blu-ray, Cable/Satellite Box, DVD, Older Game Consoles

    Composite (Red, White, Yellow)


    480i (Standard Definition)

    VCR, DVD, Cable/Satellite Box, Older Game Consoles



    Up to 1080i

    Antenna, Direct cable connection, VCR, DVD

    NOTE: If your external device supports multiple connection methods (composite, component, or HDMI), use either the component or HDMI out port(s) for the best possible picture quality

  • In some cases, your source input device such as VCR may actually be sending a very low resolution to your UDHTV, this may be some older devices that was produced before the invention of high definition resolutions.

    Most new devices will automatically detect your TV’s resolution and upscale the output resolution to produce a 4K viewing experience. To detect your input device resolution, follow the quick step below:

    On the remote control, press INFO

    Your TV will display the information of the program and also display the resolution of the input signal coming into the TV.

    If your device is outputting a lower resolution, you may need to contact your service provide or device manufacturer for proper instruction about how to change the output resolution settings.

  • Other picture settings related to your UHDTV are

    1. Dynamic Contrast
    2. Super Resolution
    3. Noise Reduction

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