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LG 65SM9000PUA User Manual

LG 65SM9000PUA
107 pages
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P/NO : MFL71404405 (1903-REV00)
CHASSIS : UA92E
MODEL : 65SM9000PUA
LED TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONFIDENTIAL
Copyright © 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
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LG 65SM9000PUA Specifications

General IconGeneral
Screen Typeled
Wall Mount300mm x 300mm
Features4k upscaling, billion rich colours, nano color, object depth enhancer
Tunerdigital
Screen Size64.5 inches, 65 inches
Resolution4k (2160p)
Refresh Rate120hz
Closed Captioningyes
Motion Enhancementtrumotion 240
HDRyes
HDR Formatdolby vision, hdr 10, hybrid log-gamma (hlg)
Built-In Speakerstrue, downward firing
Surround Sounddts-hd, dolby atmos
Speakers Output40 watts
HDMI ARC Portsyes
USB Ports3
USB 2.0 Ports3
Ethernetyes
RF Antennayes
Bluetoothtrue, 5.0
Networkbuilt-in wi-fi, ethernet
Headphones Outputyes
Digital Optical Audio Outputs1
Component Video Inputs0
Composite Video Inputs1
DVI0
SmartTVwebos
Smart Applicationsamazon alexa, apple homekit, google assistant
Voice Assistantamazon alexa, google assistant
Remote Controlmagic
3Dno
Power Consumption175 kilowatt hours
Depth with Stand12.8 inches
Height with Stand35.7 inches
Width with Stand57.5 inches
Net Weight with Stand61.9 pounds
Depth without Stand2.5 inches
Height without Stand32.9 inches
Net Weight without Stand58.2 pounds

Summary

Safety Precautions

General Guidance for Servicing Safety

Provides general advice for safe servicing, including isolation transformers and part replacement.

AC Leakage Current Checks

Procedures for checking AC leakage current with the plug removed (Cold Check) and connected (Hot Check).

Servicing Precautions and Guidelines

General Servicing Precautions

Essential precautions for handling components, testing, cleaning, and general electrical safety during service.

Handling Electrostatic Sensitive Devices

Techniques to prevent damage to static-sensitive components during service operations.

Component Replacement and Repair Procedures

Servicing Integrated Circuits and Transistors

Procedures for removing and replacing ICs, discrete transistors, and power transistors.

Software Update Procedures

USB Software Update Guide

Step-by-step guide for updating TV software using a USB drive.

Software Update Methods

Network Software Update (NSU)

Instructions for updating software via the network, including automatic and manual methods.

Block Diagram Overview

Power Supply Management

Exploded View of Television Set

Assembly and Disassembly Guide

TV Stand Removal Procedure

Step-by-step instructions for removing the TV stand from the unit.

Module Disassembly Procedures

Module Assembly Procedures

Trouble Shooting Guide

Standard Repair Process

Video Error: No Video/Normal Audio

Troubleshooting steps for issues where there is no video but normal audio.

Video Error: No Video/No Audio

Troubleshooting steps for complete lack of video and audio output.

Video Error: Picture Broken/Freezing

Diagnostic steps for issues with picture freezing or breaking up.

Video Error: Color Issues

Troubleshooting for incorrect colors, color smears, or color banding.

Video Error: Bars/Image Issues

Steps for diagnosing vertical/horizontal bars, residual images, or light spots.

Power Error Diagnosis

Power Error: No Power Troubleshooting

Troubleshooting flowchart for a TV that does not turn on at all.

Power Error: Intermittent Power

Steps for diagnosing issues where the TV turns off unexpectedly or cycles power.

Audio Error Diagnosis

Audio Error: No Audio/Normal Video

Troubleshooting steps for when there is no sound but the video is normal.

Audio Error: Distorted/Intermittent Audio

Steps for diagnosing corrupted, intermittent, or noisy audio.

Functional Error Diagnosis

Remote Control Operation Issues

Troubleshooting for problems with the remote control and local buttons.

Magic Remote (MR19) Operation Issues

Steps for diagnosing problems with the Magic Remote control and its functions.

Functional Error Diagnosis

Wi-Fi Connectivity Issues

Troubleshooting steps for problems related to Wi-Fi connection and operation.

External Device Recognition Errors

Diagnostic process for when external devices are not recognized or connected properly.

Noise Diagnosis

Circuit and Mechanical Noise Troubleshooting

Steps to identify and resolve circuit noise or mechanical sounds from the TV.

Exterior Defects

Detailed Repair Process

Detailed Repair Process

Appendix: Symptom Examples

Detailed Repair Process

Function Error: Remote Control Operation

Steps for checking the IR sensor and remote control cable for functional errors.

Function Error: Magic Remote/Wi-Fi Check

Checks for BT/Wi-Fi cable and 3.5V terminal for motion remote/Wi-Fi issues.

Function Error: Service Remote Access

Guide on how to access the service menu using the remote control.

Post-Main Board Replacement Checks

Steps for checking model number and white balance after replacing the main board.

Video Error: Test Pattern Adjustment

Guide to using ADJ Key for test patterns to check pixels or module errors.

Smart Jig Power Diagnosis

Smart Jig Diagrams

Smart Jig Connection

Smart Jig Voltage Settings

Power Board Diagnostic Methods

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