LG 65LW6500 Service Manual

The LG 65LW6500 is a 65-inch LED TV with Full HD 1080p resolution, built-in digital tuner, LED backlight technology, multiple HDMI inputs, USB connectivity, Smart TV features, built-in Wi-Fi, audio outputs, remote control, energy saving modes, and advanced picture settings. Powered by 120V AC, 60Hz. Below are key sections for safety, technical specifications, disassembly procedures, troubleshooting, and service information.

1. Product Overview 2. Technical Specifications 3. Disassembly Procedures 4. Circuit Diagrams 5. Component Locations 6. Troubleshooting Guide 7. Replacement Parts 8. Software Update Procedures 9. Safety Precautions 10. Service Contact Information

Product Overview

Key components: LED panel with edge-lit backlight, main board, power supply board, T-CON board, Wi-Fi module, speakers, and remote control.

ComponentDescription
Main BoardCentral processing unit for all TV functions
Power Supply BoardProvides power to all components
T-CON BoardTiming controller for LCD panel
LED BacklightEdge-lit LED system for display illumination
Wi-Fi ModuleWireless connectivity for Smart TV features
Speakers10W x 2 output stereo sound system
Remote ControlMagic Remote with motion control

Technical Specifications

Disassembly Procedures

Follow these steps carefully for safe disassembly.

  1. Remove stand: Lay TV face down on soft surface, remove screws holding stand.
  2. Remove back cover: Remove all screws from back panel, carefully separate back cover.
  3. Disconnect cables: Note cable positions before disconnecting from main board.
  4. Remove boards: Unscrew and carefully remove power supply, main, and T-CON boards.
  5. Access LED strips: Remove bezel and diffuser panels to access LED backlight system.

WARNING! Always disconnect power before disassembly. Handle LCD panel with care to avoid damage.

Circuit Diagrams

Complete schematic diagrams for all major circuits.

Note: Refer to separate schematic diagrams document for detailed views.

Component Locations

Key component positions on main chassis.

ComponentLocation
Main BoardCenter rear, behind input panel
Power SupplyLeft side rear
T-CON BoardTop center, behind LCD panel
Wi-Fi ModuleRight side, connected to main board
IR SensorBottom center bezel
SpeakersBottom left and right sides

Troubleshooting Guide

SymptomPossible CauseCorrective Action
No PowerPower supply failureCheck fuse, test power supply output voltages
No Picture/Sound OKBacklight failureTest LED backlight, check inverter circuit
No SoundAudio circuit failureCheck audio IC, speakers, connections
No WiFiWiFi module failureReset module, check connections, replace if needed
Vertical LinesT-CON or panel failureTest T-CON board, check LVDS cables
Image RetentionPanel agingRun pixel refresher, check T-CON settings

Replacement Parts

Authorized replacement components and part numbers.

Note: Always use genuine LG parts for replacements.

Software Update Procedures

Methods for updating TV software and firmware.

  1. Online Update: Connect to internet, go to Settings > General > About This TV > Check for Updates
  2. USB Update: Download firmware from LG website, extract to USB, insert in TV USB port
  3. Service Remote: Use service remote to enter service menu for advanced updates
  4. Factory Reset: Settings > General > Reset to Initial Settings (backup data first)

CAUTION! Do not interrupt power during software updates.

Safety Precautions

Essential safety guidelines for service technicians.

WARNING! High voltages present even when powered off. Exercise extreme caution.

Service Contact Information

LG authorized service centers and support contacts.

This service manual is intended for qualified service technicians only.

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