LG 42LN5700 Manual HDMI

The LG 42LN5700 is a 42-inch LED TV with Full HD 1080p resolution, built-in digital tuner, multiple HDMI inputs, USB connectivity, Smart TV features, and advanced audio/video processing. This manual covers HDMI connectivity, setup, troubleshooting, and optimal usage for the best viewing experience. Below are key sections for features, installation, HDMI setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. HDMI Setup 4. Specifications 5. Controls and Settings 6. HDMI Connectivity 7. HDMI Troubleshooting 8. Smart Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 42-inch LED display with Full HD 1080p, multiple HDMI ports, USB connectivity, built-in Wi-Fi, Magic Remote compatibility, and LG Smart TV platform.

FeatureDescription
HDMI PortsMultiple HDMI inputs for connecting external devices
HDMI-CECSimplink feature for controlling connected devices
USB PortsFor media playback and recording
Built-in Wi-FiWireless connectivity for Smart TV features
Smart TVAccess to streaming apps and web browsing
Magic RemotePoint and click navigation
Audio OutputDigital optical audio and headphone jack
Energy SavingMultiple power saving modes
Picture ModesVivid, Standard, Cinema, Game, Sports
Sound ModesStandard, Music, Cinema, Sports, Game

Installation

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

  1. Connect antenna or cable: Attach coaxial cable to ANTENNA/CABLE input.
  2. Connect HDMI devices: Use HDMI ports for Blu-ray players, gaming consoles, streaming devices.
  3. Connect audio system: Use digital optical audio output for home theater systems.
  4. Connect to network: Use Ethernet or built-in Wi-Fi for Smart TV features.
  5. Plug into AC power.

WARNING! TV is heavy; use two people for installation. Ensure wall mount is properly secured.

HDMI Setup

Power on TV and connected HDMI devices; follow on-screen prompts.

  1. Select HDMI input: Press INPUT button and select corresponding HDMI port.
  2. Enable HDMI-CEC: Access Settings > General > Simplink to control connected devices.
  3. Adjust picture settings: Use Picture menu for optimal HDMI viewing.
  4. Configure audio: Set audio output for HDMI devices in Sound settings.
  5. Label inputs: Rename HDMI inputs for easy identification.

CAUTION! Use high-speed HDMI cables for best performance with 1080p content.

Specifications

Controls and Settings

Access settings via Home button or Settings menu. Front Panel: POWER, INPUT, VOLUME, MENU.

Magic Remote: POWER, Home, Wheel, Pointer, Back, Volume, Mute, Input, Quick Access.

Picture Settings: Mode, Backlight, Contrast, Brightness, Sharpness, Color, Tint. Sound Settings: Mode, Balance, Bass, Treble, Auto Volume. Network: Wi-Fi setup, Network test. General: Language, Time, Safety, Reset. HDMI Settings: Device connector, HDMI Ultra HD Deep Color.

HDMI Connectivity

HDMI ports support various devices: Blu-ray players, gaming consoles, streaming devices, computers.

  1. Turn off TV and HDMI devices before connecting.
  2. Use high-speed HDMI cables for optimal performance.
  3. Connect HDMI cable from device to TV HDMI port.
  4. Power on devices and select corresponding HDMI input.
  5. Enable HDMI-CEC for unified control.

Tip: Label HDMI inputs in settings for easy identification of connected devices.

HDMI Troubleshooting

Common HDMI issues and solutions for optimal performance.

  1. No signal: Check cable connections and input selection.
  2. No audio: Verify audio settings and cable connections.
  3. Poor picture quality: Use high-speed HDMI cables and adjust picture settings.
  4. HDMI-CEC not working: Enable Simplink in settings.
  5. Device not recognized: Try different HDMI port or cable.
  6. Resolution issues: Adjust display settings on source device.
  7. Color problems: Check HDMI Deep Color settings.
  8. Intermittent connection: Secure cable connections at both ends.

WARNING! Do not force HDMI connectors; ensure proper alignment before insertion.

Smart Features

WebOS platform with streaming apps, web browsing, and content discovery.

Accessibility: Closed Captions, Audio Description, Voice Guidance. Parental Controls: Channel locks, content rating restrictions. Smart Features: LG Content Store, Live Plus, Magic Mobile Connection.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for screen; slightly damp cloth for cabinet.

CAUTION! Do not use chemicals or abrasive cleaners. Avoid direct sunlight and moisture.

Regulatory Information

FCC Part 15: Class B digital device compliant. Energy Star qualified. Copyright © LG Electronics. For support, visit www.lg.com or contact 1-800-243-0000. HDMI, HDMI logo, and High-Definition Multimedia Interface are trademarks of HDMI Licensing LLC.

Troubleshooting

SymptomPossible CauseCorrective Action
No HDMI signalInput selection/cableSelect correct HDMI input; check cable connections; try different port.
HDMI audio issuesSettings/connectionsCheck audio output settings; ensure HDMI cable fully inserted.
Poor HDMI pictureCable quality/settingsUse high-speed HDMI cable; adjust picture settings; check source resolution.
HDMI-CEC not workingSettings/device compatibilityEnable Simplink; check device HDMI-CEC support; power cycle devices.
Smart TV not connectingNetwork issuesCheck Wi-Fi/Ethernet connection; restart router; update software.

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

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

LG 42LN5700 Manual HDMI © - All Rights Reserved 2025