LG 55UH770T Manual

The LG 55UH770T is a 55-inch 4K Ultra HD Smart LED TV with webOS 3.0, HDR Pro, Local Dimming, Magic Remote support, built-in Wi-Fi, HDMI 2.0 inputs, USB ports, Ethernet connectivity, and advanced audio features including Dolby Digital. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 55-inch 4K UHD LED display, webOS 3.0 Smart TV platform, Magic Remote, HDMI inputs, USB ports, Ethernet port, Wi-Fi connectivity.

Feature	Description
Screen Size	55-inch 4K Ultra HD LED
Resolution	3840 x 2160 pixels
HDR Pro	High Dynamic Range support
webOS 3.0	Smart TV platform with app store
Magic Remote	Point and click remote control
HDMI Inputs	4 x HDMI 2.0 ports
USB Ports	3 x USB 2.0 ports
Wi-Fi	Built-in wireless connectivity
Ethernet	Wired network connection
Audio	Dolby Digital, 20W speakers

Installation

Unpack and inspect contents. Place on stable surface or mount on wall.

1. Attach stand: Secure base to TV using provided screws.
2. Connect antenna or cable: Use coaxial input for TV signal.
3. Connect external devices: Use HDMI ports for gaming consoles, streaming devices.
4. Connect to network: Use Wi-Fi or Ethernet for internet access.
5. Plug into AC power.

WARNING! TV is heavy; use two people for installation. Ensure wall mount is rated for TV weight.

First-Time Setup

Power on TV; follow on-screen setup wizard.

1. Select language: Choose preferred language for interface.
2. Connect to network: Select Wi-Fi network or connect Ethernet cable.
3. Channel setup: Auto-program digital and analog channels.
4. LG account: Create or sign in to LG account for smart features.
5. Picture settings: Calibrate picture mode for your environment.

CAUTION! Ensure proper ventilation around TV; do not block vents.

Specifications

• Screen Size: 55 inches LED.
• Resolution: 3840 x 2160 (4K Ultra HD).
• HDR: HDR Pro support.
• Smart TV: webOS 3.0 with LG Content Store.
• Connectivity: 4 HDMI, 3 USB, Ethernet, Wi-Fi, Bluetooth.
• Audio: Dolby Digital, 20W output.
• Power Consumption: 130W typical.
• Dimensions: With stand: 48.4" x 29.9" x 10.2".
• Weight: With stand: 41.9 lbs.

Controls and Settings

Access settings via Home button on Magic Remote or physical buttons on TV.

Magic Remote: Power, Home, Navigation wheel, Voice recognition, Quick access buttons.

Picture Settings: Picture mode (Standard, Vivid, Cinema, Game), Backlight, Contrast, Brightness, Color, Tint. Sound Settings: Sound mode (Standard, Music, Cinema, Sports), Equalizer, AV Sync. Network: Wi-Fi setup, Ethernet, Network test. General: Language, Time, Safety, Reset.

Connecting Devices

HDMI: Connect gaming consoles, Blu-ray players, streaming devices. USB: Connect storage devices for media playback. Component/Composite: Legacy device connections.

1. Turn off TV before connecting devices.
2. Use high-speed HDMI cables for 4K content.
3. Select input source using Input button on remote.
4. Label inputs for easy identification.

Tip: Use HDMI ARC for connecting soundbars or audio systems.

Smart TV Features

webOS 3.0 provides access to streaming services and apps.

1. Home Dashboard: Press Home button to access apps and settings.
2. LG Content Store: Download additional apps and games.
3. Live Plus: Access program guide and recording features.
4. Magic Remote: Use point and click navigation.
5. Voice Recognition: Press microphone button for voice commands.
6. Screen Share: Mirror compatible mobile devices.
7. Software Updates: Keep TV updated with latest features.

WARNING! Keep software updated for security and performance.

Accessibility Features

Closed Captions: Enable in Accessibility settings. Voice Guidance: Audio descriptions for visually impaired. High Contrast: Improved visibility for low vision. Energy Saving: Adjust power consumption settings.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for screen. For stubborn stains, lightly dampen cloth with water.

CAUTION! Do not use chemicals, alcohol, or abrasive cleaners. Avoid pressure on screen surface.

Regulatory Information

FCC Part 15: Class B digital device compliant. Energy Star certified. Copyright © 2025 LG Electronics. For support, visit www.lg.com or contact 1-800-243-0000. Model: 55UH770T.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet; ensure power button is on.
No picture	Input source/cables	Select correct input; check cable connections; restart TV.
No sound	Volume/mute settings	Check volume level; disable mute; check audio output settings.
Wi-Fi not connecting	Network issues	Check router; re-enter password; move closer to router.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear line of sight to TV sensor.
Apps not loading	Internet/software	Check internet connection; update software; reset smart features.

Reset: Settings > General > Reset to Initial Settings.

Service: 1-800-243-0000; www.lg.com