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LG 32LH20D User Manual

LG 32LH20D
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LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LB91A
MODEL : 32LH20D
32LH20D-AA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
P/NO : MFL60020303 (0904-REV00) Printed in Korea
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LG 32LH20D Specifications

General IconGeneral
Number of AV connections1
PC Audio inYes
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Display diagonal32 \
Display brightness500 cd/m²
Display resolution1366 x 768 pixels
Native aspect ratio16:9
Product colorBlack
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)224 mm
Width (with stand)805 mm
Height (with stand)583 mm
Depth (without stand)79.9 mm
Height (without stand)528 mm
Weight (without stand)10300 g

Summary

Safety Precautions

Servicing Precautions

Component Replacement Procedures

IC, Transistor, and Diode Replacement

Step-by-step instructions for removing and installing Integrated Circuits, transistors, and diodes.

Adjustment and Assembly Processes

Assembly Line Process

Video Error Troubleshooting

No Video / Normal Audio Diagnosis

Flowchart for diagnosing and resolving issues where no video is displayed but audio is present.

No Video / No Audio Diagnosis

Flowchart for troubleshooting scenarios with neither video nor audio output.

Picture Broken or Freezing Diagnosis

Steps to resolve issues with distorted or frozen video output.

Color Error Diagnosis

Steps to identify and fix color-related display problems across various input sources.

Visual Artifacts & External Device Errors

Troubleshooting guide for bars, image retention, light spots, and external device signal issues.

Power Error Troubleshooting

No Power Issues Diagnosis

Flowchart for troubleshooting when the TV does not turn on or respond to power commands.

Power Auto On/Off Issues Diagnosis

Steps to diagnose and fix unexpected power cycling or auto-off behavior.

Audio Error Troubleshooting

No Audio / Normal Video Diagnosis

Flowchart for resolving issues with audio output while video is normal.

Audio Discontinuation or Noise Diagnosis

Steps to fix problems with intermittent audio or audio noise across different sources.

Functional & Exterior Problem Troubleshooting

Remote Control and Local Switch Issues

Diagnosing problems with remote control operation and physical buttons on the TV.

External Device Recognition Errors

Troubleshooting steps when the TV fails to recognize connected external devices.

Noise Identification and Resolution

Procedures for identifying and fixing circuit or mechanical noise issues.

Exterior Defect Resolution

Steps for addressing physical damage to the TV's casing, remote, or stand.

Detailed Repair Flowcharts - Power and OSD

Power-Up Boot Fail Troubleshooting

Flowchart for diagnosing power-up failures.

Detailed Repair Flowcharts - Video Inputs

Detailed Repair Flowcharts - Audio Inputs

Detailed Repair Flowcharts - Connectivity & Sensors

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