LG FLATRON W1952S Service Manual
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LG FLATRON W1952S Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM 84A
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
W1952S(W1952S-*FT.K***A**)
Website:http://biz.LGservice.com

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Mpho Neshehe
March 4, 2025

Can I use the monitor as a display for tv using the HDMI to VGA converter?

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1 comments:
Mr. Anderson
May 14, 2025

The LG FLATRON W1952S monitor has a 15-pin D-Sub (VGA) input and supports analog RGB signals. If your TV or source device has an HDMI output, you can use an HDMI to VGA converter to connect it to the monitor. However, compatibility depends on the converter's quality and whether it supports active signal conversion from digital (HDMI) to analog (VGA). The monitor does not support audio via VGA, so sound would need a separate solution.

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Summary of Contents for LG FLATRON W1952S

  • Page 1 Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM 84A MODEL: W1952S(W1952S-*FT.K***A**) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Vertical : 56 ~ 75Hz : 3.9 kg (8.6 lbs) Net. Weight : 5.02 kg (11.07 lbs) Gross Weight Copyright 2007 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Precautions

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 8. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. Copyright 2007 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 IC. circuit board to prevent excessive component temperatures. Copyright 2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 Solder the overlapped area and clip off any excess jumper wire. Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Timing Chart

    900 V(Lines) 59.90 H(Pixels) 55.935 1904 1440 1440x 106.500 V(Lines) 59.887 H(Pixels) 70.635 1936 1440 1440x 136.750 V(Lines) 74.984 Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    DISASSEMBLY Put a cushion or soft cloth on a flat surface. Slide the Cable Deco Cover out from the stand body. Place the monitor face down on the cushion or soft cloth. Press the hook,Take off the stand base from stand body. Please pull the stand body lightly to separate it from the hinge body.

  • Page 9: Block Diagram

    BLOCK DIAGRAM Copyright 2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Description Of Block Diagram

    The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable. The controlled data of each modes is stored in EEPROM. Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only...
  • Page 11 This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. Copyright 2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adjustment

    Click “ Write” button c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting Guide

    IS IC700 PIN2(3.3V) IC701(1.8V) LINE IC701 PIN2(1.8V) CHECK U201 PIN127 CHECK CRYSTAL(X501) PULSE CHECK U501 Waveforms J703-#5,6 IC700-#2 IC701-#2 U201-#127 Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 WIRE OF THE LCD MODULE Waveforms J703-#5,6 J703-#9 REPLACE LCD MODULE J703-#10 (Brightness 100) J703-#10 (Brightness 0) LAMP CURRENT Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 PIN33(V-SYNC). FROM D-SUB TO U201 IS PULSE APPEARED AT SIGNAL PINS? TROUBLE IN CABLE OR LCD MODULE Waveforms U201-#127 Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 APPEARED? CHECK U201 PIN 32,33 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN U501 Waveforms 1 H-SYNC 2 V-SYNC Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Exploded View

    Description LCD,Module-TFT,LM190WX1-TLC1 DRIVER 19INCH 1440X900 300CD COLOR 72% 16/10 EAJ36290801 850:1 5ms, MAGNA source D-IC, OKI gate D-IC, TLI T-con, 160/160, P7 LG PHILIPS LCD LCD,Module-TFT,LM190WX1-TLC2 DRIVER 19INCH 1440X900 300CD COLOR 72% 16/10 850:1 P7, EAJ36290802 5ms,Non-ZBD,MAGNA source D-IC, OKI gate D-IC, TLI T-con, 160/160 LG PHILIPS LCD LCD,Module-TFT,HT190WG1-100 ZBD DRIVER 19.0INCH 1440X900 300CD COLOR 72% 16/9 700:1 4CCFL,...
  • Page 20 “IC,Serial Flash Memory,W25X20VSNIG 2MBIT 25” R717 0RH1002D622 “Resistor,Chip,MCR10EZHJ103 10KOHM” U503 0IMMRSG036B “IC,EEPROM,M24C16-WMN6TP 16KBIT” R726 0RJ4701D677 “Resistor,Chip,MCR03EZPJ472 4.7KOHM” R727 0RJ4701D677 “Resistor,Chip,MCR03EZPJ472 4.7KOHM” Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 20 - Only for training and service purposes...
  • Page 21 “Switch,Tact,JTP1280A6 1C1P 12VDC” OTHERs X501 6212AA2001G “Crystal,HLX-U-F-14.31818M-18” 6602T12005E “Connector,Wafer,12505WR-06A00 6P 1.2” 6602T12005C “Connector,Wafer,12505WR-04A00 4P 1.2” 6602T12005C “Connector,Wafer,12505WR-04A00 4P 1.2” Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes...

  • Page 22: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER Copyright 2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 2. POWER & WAFER Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 3. CONTROL Copyright 2007 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Dec. 2007 P/NO : MFL30290863 Printed in China...

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