LG 55UH77 Manual

The LG 55UH77 is a 55-inch Ultra HD Smart TV with 4K resolution, built-in digital tuner, webOS smart platform, integrated Wi-Fi, multiple HDMI inputs, USB ports, component/composite inputs, headphone jack, Magic Remote control, HDR support, voice control, screen mirroring, and advanced picture/audio settings. Powered by 120V AC, 60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Smart Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 55-inch 4K UHD LED panel, Magic Remote, webOS smart platform, multiple HDMI ports, USB ports, component inputs, Ethernet port, Wi-Fi connectivity.

Feature	Description
ANTENNA/CABLE input	For external antenna or cable/satellite connection
HDMI ports (4)	For high-definition video/audio devices
USB ports (3)	For media playback and recording
COMPONENT IN	For component video input
AV IN	For composite video input
HEADPHONE OUT	For private audio listening
OPTICAL DIGITAL AUDIO OUT	For external audio systems
ETHERNET port	For wired internet connection
POWER button	Turns TV on/off
INPUT button	Selects input source

Installation

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

Connect antenna or cable: Attach coaxial cable to ANTENNA/CABLE input.
Connect external devices: Use HDMI ports for modern devices; component/composite for legacy devices.
Connect to internet: Use Ethernet cable or built-in Wi-Fi.
Connect audio system: Use optical audio out for soundbars/home theater.
Plug into AC power outlet.

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

First-Time Setup

Power on TV; follow on-screen setup wizard.

Select language: Choose preferred language for interface.
Connect to network: Select Wi-Fi network or connect Ethernet cable.
Scan for channels: Auto-program digital and analog channels.
Set up LG account: Create or sign in to LG account for smart features.
Adjust basic settings: Set time zone, picture mode, sound mode.

CAUTION! Ensure stable surface; keep ventilation openings clear.

Specifications

Screen Size: 55 inches UHD LED.
Resolution: 3840 x 2160 (4K Ultra HD).
Smart Platform: webOS with LG Content Store.
Connectivity: Wi-Fi, Ethernet, Bluetooth, Screen Share.
Sound: 20W speakers with Dolby Digital.
HDR: HDR10 and HLG support.
Ports: 4x HDMI, 3x USB, Component, Composite, Optical Audio.
Power Source: 120V AC, 60Hz.
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access settings via Home button on Magic Remote. Front Panel: POWER, INPUT, VOLUME buttons.

Magic Remote: POWER, Home, Navigation wheel, Voice control, Number buttons, Input, Volume, Quick Settings.

Picture Settings: Picture Mode, Backlight, Contrast, Brightness, Sharpness, Color, Tint, Color Temperature, Advanced settings. Sound Settings: Sound Mode, Equalizer, AV Sync, Sound Out. Network: Wi-Fi, Ethernet, Network Test. General: Language, Time, Safety, Reset.

Connecting Devices

HDMI: For Blu-ray players, gaming consoles, streaming devices. USB: For media playback and recording. Component/Composite: For older devices.

Turn off TV and devices before connecting.
Use high-speed HDMI cables for 4K content.
Select input via INPUT button or Home menu.
Configure device settings in External Device Manager.

Tip: Use HDMI-CEC for simplified control of connected devices.

Smart Features

webOS platform with app store, web browser, and content services.

Home Dashboard: Access all smart features and connected devices.
LG Content Store: Download apps and games.
Live TV: Watch broadcast channels with electronic program guide.
Screen Share: Mirror smartphone/tablet screen.
Voice Control: Use Magic Remote for voice commands.
Magic Link: Access related content with one click.
Multi-tasking: Run multiple apps simultaneously.

WARNING! Keep software updated for security and performance.

Accessibility Features

Closed Captions: Digital and analog caption support. Audio Description: For visually impaired. Voice Guidance: Screen reader function. High Contrast: Enhanced visibility. Energy Saving: Adjust power consumption.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for screen; slightly damp cloth for cabinet. Do not use chemicals or abrasive materials.

CAUTION! Never spray liquids directly on screen; avoid pressure on LCD panel.

Regulatory Information

FCC Part 15: Class B digital device compliant. Energy Star certified. Copyright © 2024 LG Electronics Inc. All rights reserved. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet; ensure power button is on.
No picture/sound	Input selection/cables	Select correct input; check cable connections; restart TV.
Poor picture quality	Settings/signal	Adjust picture settings; check signal strength; use high-quality cables.
Wi-Fi not connecting	Network/router	Check network password; restart router; move closer to router.
Remote not working	Batteries/obstructions	Replace batteries; ensure line of sight; pair Magic Remote if needed.

Reset: Settings > General > Reset to Initial Settings.

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