LG 75UH8550 Manual

The LG 75UH8550 is a 75-inch 4K Ultra HD Smart LED TV with webOS 3.0, HDR Pro, Ultra Luminance, Tru-ULTRA HD Engine, and built-in Wi-Fi. Features include Magic Remote support, HDMI 2.0 inputs, USB connectivity, HEVC decoding, and LG's ThinQ AI technology. 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 TV Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 75-inch 4K UHD LED display, webOS 3.0 Smart TV platform, Magic Remote, HDMI inputs, USB ports, built-in Wi-Fi.

Feature	Description
Screen Size	75-inch 4K Ultra HD LED
Resolution	3840 x 2160 pixels
Smart TV	webOS 3.0 with Magic Remote
HDR	HDR Pro with Ultra Luminance
Connectivity	4x HDMI 2.0, 3x USB, Ethernet, Wi-Fi
Audio	20W speakers with Clear Voice Pro
Processor	Tru-ULTRA HD Engine
Magic Remote	Point, click, scroll, and voice control
ThinQ AI	Built-in Google Assistant and Amazon Alexa
Power	AC 120V, 60Hz

Installation

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

TV Placement: Ensure stable, level surface with proper ventilation.
Wall Mounting: Use VESA 400x400 compatible mount; follow mounting instructions.
Connect Antenna/Cable: Attach coaxial cable to ANT/CABLE input.
Connect External Devices: Use HDMI ports for gaming consoles, streaming devices.
Connect to Network: Use Ethernet cable or built-in Wi-Fi.
Plug into AC power.

WARNING! TV is very heavy; use two people for handling and installation.

First-Time Setup

Power on TV; follow on-screen setup wizard.

Language Selection: Choose preferred language (default: English).
Network Setup: Connect to Wi-Fi or wired network.
Channel Scan: Auto-program TV channels.
LG Account: Sign in or create LG account for Smart TV features.
Magic Remote Pairing: Follow on-screen instructions to pair remote.
Picture Settings: Calibrate picture mode (Standard, Vivid, Cinema, etc.).

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

Specifications

Screen Size: 75 inches LED
Resolution: 3840 x 2160 (4K Ultra HD)
HDR: HDR10, HLG
Smart Platform: webOS 3.0
Processor: Tru-ULTRA HD Engine
Connectivity: 4x HDMI 2.0, 3x USB 2.0, Ethernet, Wi-Fi 802.11ac
Audio: 20W (10W x 2) with Clear Voice Pro
Voice Control: Built-in Google Assistant, Amazon Alexa
Power Consumption: 180W (typical)
Dimensions: 66.1" x 38.2" x 2.4" (without stand)

Controls and Settings

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

Magic Remote: Power, Home, Navigation wheel, Voice control, Number buttons, Volume, Channel, Input, Settings.

Picture Settings: Picture Mode, Backlight, Contrast, Brightness, Sharpness, Color, Tint, Color Temperature, Advanced settings. Audio Settings: Sound Mode, Balance, Clear Voice, Auto Volume. Network: Wi-Fi setup, Network test, LG Connect Apps. General: Language, Time, Safety, Reset.

Connecting Devices

HDMI: Connect gaming consoles, Blu-ray players, soundbars. USB: Connect storage devices for media playback. Network: Ethernet or Wi-Fi for Smart TV features.

Turn off TV and devices before connecting.
Use high-speed HDMI cables for 4K content.
Select input via INPUT button (HDMI 1-4, TV, USB).
For audio systems: Use HDMI ARC or optical audio output.

Tip: Use HDMI 2.0 ports for 4K HDR content at 60Hz.

Smart TV Features

webOS 3.0 provides access to streaming apps, web browsing, and smart features.

Home Dashboard: Press Home button to access apps and settings.
Content Store: Download additional apps and games.
Live Plus: Access interactive TV features and information.
Magic Mobile Connection: Connect smartphone to TV.
Voice Control: Use Magic Remote for voice commands.
Screen Share: Mirror smartphone or tablet screen.
Multi-Tasking: Run multiple apps simultaneously.

WARNING! Keep software updated for optimal performance and security.

Accessibility Features

Closed Captions: Enable in Accessibility settings. Voice Guidance: Audio description of on-screen elements. High Contrast: Enhanced visibility for visually impaired. Audio Description: Additional audio track describing visual elements.

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 © 2025 LG Electronics. For support, visit www.lg.com or contact 1-800-243-0000. All trademarks are property of their respective owners.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No picture/sound	Power/connections	Check power cord; ensure TV is plugged in; verify input source.
Poor Wi-Fi connection	Signal strength	Move router closer; check network settings; restart router.
Remote not working	Batteries/pairing	Replace batteries; re-pair Magic Remote; ensure line of sight.
No 4K/HDR content	HDMI/streaming	Use HDMI 2.0 port; check streaming service supports 4K; verify HDMI cable.
Apps not loading	Network/updates	Check internet connection; update webOS software; restart TV.
Sound issues	Settings/connections	Check audio settings; verify external speaker connections; test different content.

Reset: Settings > General > Reset to Initial Settings if needed.

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