Recommended: Update Every Outdated Driver on Your PC in One Scan - Free →Recommended: PC Feels Slow? A Free Scan Shows What's Dragging Windows Down →Recommended: Crashes or Glitches? A Free Driver Scan Usually Finds the Culprit →
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Connect the cable box’s HDMI OUT port to an HDMI IN port on your LG TV, then select that same HDMI input on the TV. HDMI carries both picture and sound for this setup, so a separate audio cable is not needed.
Connect the cable box to your LG TV
- Find the ports. Look for an available HDMI IN port on the back or side of the TV and an HDMI OUT port on the cable box. Use the labels printed beside the ports; their location and naming can vary by model.
- Connect the HDMI cable. Plug one end into the cable box’s HDMI OUT port and the other into the TV’s HDMI IN port. Use any HDMI cable you already have that fits; you do not need to buy one if a suitable cable is available.
- Turn on both devices. Switch on the TV and cable box.
- Select the TV input. On the LG remote, press External Input or Input, then choose the HDMI number used for the connection—for example, HDMI 1 if the cable is plugged into HDMI 1. Remote buttons and menus vary by model.
- Optionally name the input. If your TV offers input naming, label it “Cable Box.” A previously named HDMI input may appear as “Set-top Box.”
LG’s set-top-box connection guide describes the box as an external input source that must be enabled on the TV. Selecting the TV’s built-in channel tuner will not show the cable-box signal in this setup.
If your TV says “No Signal”
- Confirm the TV is set to the same HDMI input number where the cable is connected.
- Check that the HDMI cable is firmly seated at both the TV and cable box.
- If there is still no picture, unplug the cable box’s power cord, reconnect it, and allow the box to restart.
- If the message remains, contact your cable provider. The source may need provider-side activation or service troubleshooting; the exact steps depend on the provider and box.
LG’s No Signal troubleshooting guidance recommends checking the selected input and connection, then power-cycling the set-top box if needed.
What if one device does not have HDMI?
Check the manuals and port labels on both devices for a matching connection. Other possibilities include composite AV, coaxial, or component video, but these are not available on every TV or cable box. The older LG 55LF5700/65LF5700 manual lists composite AV and coaxial for those models; LG’s general connection guide also discusses component video. Do not assume a passive adapter will make incompatible ports work.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
#1 Best Overall
Sale
Anker HDMI 2.1 Cable,4K@240Hz HDMI Cord, 48Gbps Certified Ultra High-Speed
- Superior Display, Swift Connectivity: Elevate your viewing experience to unparalleled clarity with 8K@60Hz, and enjoy smoother visuals and reduced lag with support for 4K@120Hz and 4K@60Hz.
- Quick and Seamless Video Transfer: With the latest HDMI technology, stream or transfer videos without interruptions, and witness the power of up to 48 Gbps in bandwidth, ensuring consistently clear content.
- Lasts Longer, Performs Stronger: This cable is designed to withstand up to 1,000 bends throughout its lifespan, meaning fewer replacements and continuous peace of mind.
- One Cable, Many Solutions: Whether you're connecting tablets, laptops, HDMI devices, projectors, or desktop screens, this cable effortlessly connects them all.
- What You Get: HDMI Cable (6 ft, 8K), welcome guide, 18-month warranty, and our friendly customer service.
| Connection | What to know |
|---|---|
| HDMI | First choice when both devices have it. The cited LG manual calls it “best” for its models and says it carries audio and video. |
| Composite AV | Listed as “good” in the cited LG manual. Both devices need compatible color-coded ports. |
| Coaxial | Also listed as “good” in that manual; port availability and setup depend on the specific models. |
| Component video | Listed in LG’s general connection guide, but availability depends on the devices. |
For any non-HDMI connection, check both manuals for the required ports and TV input selection. The supported connection and resulting picture depend on the equipment; do not assume every option provides the same features or quality.
Why the exact LG steps may look different
LG’s support guidance dated July 10, 2026, advises connecting a set-top box by HDMI and enabling it as an active external input source. The illustrations, port labels, remote buttons, menus, and input names can differ by LG model. Use the labels on your TV and its model-specific manual if the steps above do not match what you see.
Quick Recap
Best Value
Amazon Basics HDMI Cable, 3ft, 4K@60Hz, High-Speed HDMI 2.0 Cord, 18Gbps, 2160p, 48 bit, Compatible with TV/PS5/Xbox/Roku, Black
- IN THE BOX: HDMI cable (A Male to A Male) for connecting 2 HDMI-enabled devices; 3 feet long in Black
- DEVICE COMPATIBLE: Connects Blu-ray players, Fire TV, Apple TV, PS4, PS3, Xbox One, Xbox 360, and computers to TVs, displays, A/V receivers, and more
- SUPPORTS 4K VIDEO: Supports 4K video at 60 Hz, 2160p, 48-bit/px color depth, as well as bandwidth up to 18Gbps, Ethernet, 3D, and Audio Return Channel (ARC)
- EASY CONNECTION: Share an Internet connection among multiple devices (no need for a separate Ethernet cable)
- BACKWARDS COMPATIBLE: Works with earlier versions to allow for use with a wide range of HDMI-enabled devices
Rank #4
Sale
Silkland Certified HDMI 2.1 Cable Ultra High Speed 48Gbps Braided HDR 6.6FT
- 【HDMI 2.1 Certification】Only 1% of HDMI cables on the market have passed HDMI 2.1 certification. Scan with the QR code Scanner app for verification
- 【120Hz/144Hz Gaming Excellence】Elevate your gaming experience with smooth 4K@120Hz gameplay for PS5 and Xbox, and ultra-responsive 4K@144Hz for PC. Whether you’re pushing your console or PC to the limit, enjoy unparalleled performance across all platforms(Requires game to support 4K@120Hz)
- 【Exclusive "E-Braid" Technology】Experience unprecedented durability with our unique double-layer fishnet winding and nylon braiding techniques. Copper cores and ferrite magnetic beads ensure uninterrupted signals, eliminating black screens and flickering
- 【HDMI 2.1-48Gbps Bandwidth】Unleash the full potential of your devices with lightning-fast data transfer rates, ensuring seamless connectivity for all your high-definition needs
- 【Next-Level Resolution Support】Dive into the future with support for mind-blowing resolutions, including 10K 8K@60Hz, 12-bit; 5K@120Hz/90Hz, 12-bit; 4K@144Hz/120Hz, 12-bit; and 2K@240Hz/165Hz
Rank #3
Highwings Long HDMI Cable 15 FT, 10K 8K 4K@240Hz Durable in-Wall CL3 Rated
- 【Crystal-Clear Visuals: Experience Unmatched 8K Clarity】 Elevate your home entertainment with our 8K HDMI cable 15ft . Supporting 48Gbps High Speed, indulge in seamless transitions between 8K@60Hz and 4K@120Hz resolutions for crystal-clear visuals. Experience the vibrancy of Dynamic HDR, immersive 3D visuals, and HDCP2.2 & 2.3 compliance for an unparalleled viewing experience
- 【Gaming Excellence: Elevate Your Gaming with Next-Level Performance】 Our enhanced 8K long HDMI cable amplifies gaming experiences. Featuring an advanced audio return channel (eARC), enjoy superior high-definition audio compared to standard 4K cables. Bid farewell to picture freezes and tears with Variable Refresh Rate (VRR) support, ensuring smoother gameplay. This 15 ft HDMI cable is your ultimate choice for exceptional gaming performance across all compatible devices
- 【Seamless Compatibility: Versatile Connections Across Devices】 Backward compatible from HDMI versions 2.1 to 1.1, our 8K HDMI 2.1 cable 15 ft seamlessly connects laptops, Blu-ray players, HDTVs, monitors, Series X/S, CX C9 B9, AMD, Nvidia RTX 3080/3090, and various HDMI output devices. Immerse yourself in the latest high-bitrate audio formats including DTS Master, DTS:X, Atoms, and enhanced Audio Return Channel (eARC) across various setups, from 4K/8K UHD TVs to projectors and A/V Receivers
- 【Durable Performance: Sleek & Durable Copper Build for Longevity】 Crafted with advanced copper wire technology, our HDMI 15ft cable ensures greater bandwidth and durability. Experience minimal signal attenuation, superior interference resistance, and increased carrying capacity compared to traditional wires. It's the ideal choice for pre-built HDMI 2.1 cables, ensuring long-term performance without future cable replacement costs during home upgrades
- 【Lifetime Support & Precision: Quality Assurance and Bidirectional Transmission】 At Highwings, quality and customer support are top priorities. Enjoy lifetime support with our 8K long HDMI cable 15 ft. Our customer service team is available within 13 hours to assist with any cable-related issues. Remember, our cables support bidirectional transmission and are designed for optimal performance, ensuring the perfect picture on your chosen display device
Rank #2
Highwings HDMI Cable 6.6 ft, 4K HDMI 2.0 HDR, Braided, ARC 3D HDCP 2.2
- 4K HDMI UHD Transmission, Stunning Audio & Visual for Home Theater & Gaming： Enhanced with gold-plated connectors for high-speed, interference-free signal transmission. Supports 4K*2K UHD resolution (3840×2160), delivering crystal-clear imagery and full HD stereo sound—perfect for immersive home theater movie nights, gaming marathons and big-screen TV viewing
- High-Speed Bandwidth, Instant Transmission for Real-Time Playback： Fully compliant with High-Speed HDMI cable 2.0 standard for max-speed data transfer. Blazing-fast transmission of audio, video and image files with zero buffering, ideal for 4K streaming, real-time gaming and seamless laptop-to-projector presentations. Plug-and-play design, no driver installation needed for effortless one-step connection
- HDMI 2.0 Standard Compliant, Universal Compatibility for All A/V Devices： Built to fully comply with official HDMI 2.0 standards after rigorous professional quality testing. Featuring broad backward compatibility with HDMI 1.4/1.3/1.2 generations, this cable effortlessly pairs with smart TVs, game consoles, Blu-ray players, projectors, laptops and set-top boxes. Enjoy stable plug-and-play connectivity across every piece of your home audio-visual gear.
- Premium Crafted Material, Ultra Durable for Daily Home Use & Frequent Use： Exclusive SR joint design at both ends to prevent joint cracking at the source. Rigorously lab-tested to withstand over 15,000 bends without performance loss, built to endure daily plug-and-unplug, messy entertainment area setups and regular home use—ensuring long-lasting durability against daily wear and tear hdmi cable
- 100% Component Inspected, Uncompromising Quality for Long-Term A/V Enjoyment： Every single component of the cable undergoes multiple rigorous lab tests for performance and sturdiness. Only flawlessly tested parts are selected for assembly, guaranteeing top-tier product performance and extended service life with strict quality control—reliable for years of home theater, gaming and everyday big-screen use hdmi
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.
