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Sorry, there was a problem. Please try again later.Hello there. Thank you for sharing your inquiry with us. We understand you're asking how to connect your Comcast service to your 55UA7700PUB TV. To connect your Comcast service, you will typically use a Comcast (Xfinity) cable box. Your LG 55UA7700PUB TV has multiple HDMI inputs, which is the standard way to connect a cable box for high-definition video and audio. Here's how to connect your Comcast cable box: Locate the HDMI ports on your TV: On the back or side of your 55UA7700PUB TV, you will find HDMI ports. Your TV has 3 HDMI inputs. Connect the HDMI cable: Take one end of an HDMI cable and plug it into an "HDMI Out" port on your Comcast cable box. Then, plug the other end of the HDMI cable into any available HDMI input port on your LG TV (e.g., HDMI 1, HDMI 2, or HDMI 3). Power on both devices: Make sure both your Comcast cable box and your LG TV are powered on. Select the correct input: On your LG TV remote, press the Input or Source button. A menu will appear on your TV screen showing the different inputs (HDMI 1, HDMI 2, etc.). Use the arrow buttons on your remote to select the HDMI input number to which you connected your cable box. Once you select the correct input, you should see the Comcast (Xfinity) interface on your TV screen. You will then use your Comcast remote to navigate channels and access services. Your LG Magic Remote may also be able to control your Comcast box once it's set up for universal control through your TV's settings. https://www.bestbuy.com/site/lg-55-class-ua77-series-led-ai-4k-uhd-smart-webos-tv-2025/6621807.p?skuId=6621807 Please send us a private message on Social Media @LGUSSupport, and our team will be more than happy to explore possible solutions. We appreciate your patience. —Renzo
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