LG Backlight Strips 6916L-1272A Manual

The LG Backlight Strips 6916L-1272A are high-quality LED backlight components designed for LG television displays, featuring uniform illumination, energy efficiency, and long-lasting performance. These strips provide consistent backlighting for LCD panels, ensuring optimal picture quality and color reproduction. Below are key sections for safety, features, installation, specifications, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to TV 7. Operation 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LED backlight strips, connector cables, adhesive backing, power connectors.

Feature	Description
LED Type	High-brightness white LEDs
Voltage Rating	24V DC operation
Connector Type	Standard 4-pin LED connector
Adhesive Backing	3M high-temperature adhesive tape
Color Temperature	6500K standard white
Dimming Capability	PWM dimming compatible
Lifespan	50,000 hours typical
Operating Temp	-20°C to +60°C
IP Rating	IP20 - indoor use only
Compatibility	Designed for LG TV models 2018-2022

Installation

Unpack and inspect contents. Ensure proper electrostatic discharge protection.

Disconnect TV from power: Unplug AC power cord completely.
Remove TV back cover: Carefully detach rear panel to access backlight area.
Clean surface: Use isopropyl alcohol to clean mounting area.
Apply strips: Remove adhesive backing and press strips firmly into position.
Connect cables: Route and connect LED strips to power board.
Test before reassembly: Briefly power on to verify operation.
Reassemble TV: Replace back cover securely.

WARNING! High voltage present in TV; discharge capacitors before working. Use anti-static wrist strap.

First-Time Setup

After installation, configure TV settings for optimal backlight performance.

Power on TV: Plug in AC power and turn on television.
Access backlight settings: Navigate to Picture > Advanced Settings > Backlight.
Set backlight level: Adjust to preferred brightness (recommended 70-80%).
Configure local dimming: Enable for better contrast if available.
Test uniformity: Display solid color screens to check for dark spots.
Save settings: Confirm and exit menu.

CAUTION! Do not exceed maximum brightness for extended periods to prolong LED life.

Specifications

Model Number: 6916L-1272A
LED Count: 120 LEDs per strip (varies by TV size)
Power Consumption: 45W maximum
Input Voltage: 24V DC ±10%
Current Draw: 1.8A per strip
Luminous Flux: 2800 lumens total
Color Rendering Index: >80 CRI
Dimensions: 1272mm length × 16mm width × 2mm thickness
Weight: 180 grams per strip
Certifications: CE, RoHS, UL listed

Controls and Settings

Backlight control accessed through TV menu system. No physical controls on strips.

TV Menu Settings: Picture > Backlight Level, Local Dimming, Energy Saving, Auto Brightness.

Backlight Level: Adjust overall brightness (0-100%). Local Dimming: Dynamic contrast enhancement. Energy Saving: Automatic brightness reduction. Auto Brightness: Ambient light sensor control. Color Temperature: Cool, Medium, Warm settings. Advanced Settings: Gamma correction, black level adjustment.

Connecting to TV

Direct connection to TV mainboard or LED driver board.

Identify connector: Locate LED connector on TV mainboard.
Match polarity: Align red/black wires correctly (+24V, GND).
Secure connection: Push connector firmly until click.
Route cables: Avoid sharp edges and moving parts.
Test connection: Verify all strips illuminate evenly.

Tip: Label connectors during disassembly for easier reassembly.

Operation

Normal operation through TV power and settings.

Power on: TV automatically initializes backlight system.
Default settings: Backlight at 80% brightness initially.
Adjustment: Use remote control to modify backlight settings.
Standby mode: Backlight turns off during standby/sleep mode.
Error detection: TV will display error code if backlight failure detected.

WARNING! Do not modify or bypass TV safety circuits. Use only with compatible LG televisions.

Safety Features

Overcurrent protection: Automatic shutdown if current exceeds limits. Thermal protection: Reduces brightness if temperature too high. Short circuit protection: Isolates faulty strips. Open circuit detection: Identifies failed LED sections.

Care & Maintenance

Keep area clean and dust-free. Do not touch LED surfaces directly.

CAUTION! No user serviceable parts inside. Do not attempt to repair damaged strips.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE marked for European market. RoHS compliant - contains no hazardous substances. UL certified for safety standards. Copyright © 2023 LG Electronics; all rights reserved. For technical support, visit www.lg.com or contact 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No backlight	Power/LED failure	Check power connection; verify LED strips receiving 24V; replace if damaged.
Dim backlight	Settings/power issue	Adjust backlight level in menu; check voltage at connector.
Uneven lighting	Strip placement/connection	Re-seat connectors; ensure strips properly aligned and adhered.
Flickering	Loose connection/PWM issue	Check all connections; update TV firmware; test with different dimming settings.
Color issues	LED degradation/settings	Check color temperature settings; replace if LEDs discolored.

Reset: TV menu > Support > Reset to Initial Settings if backlight issues persist.

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