LG Flatron W2361V Service Manual

The LG Flatron W2361V is a 23-inch LCD monitor featuring Full HD 1920x1080 resolution, 2ms response time, 50,000:1 dynamic contrast ratio, DVI-D and D-Sub inputs, Smart Resolution technology, f-ENGINE for enhanced image quality, 4:3/16:9 aspect ratio support, and ergonomic tilt adjustment. Below are key sections for safety, technical specifications, disassembly instructions, troubleshooting, and maintenance procedures.

1. Technical Specifications 2. Safety Precautions 3. Disassembly Instructions 4. Circuit Diagrams 5. Component Locations 6. Troubleshooting Guide 7. Replacement Parts List 8. Adjustment Procedures 9. Maintenance Schedule 10. Regulatory Compliance 11. Service Contacts

Technical Specifications

Key technical parameters and performance characteristics of the LG Flatron W2361V monitor.

Specification	Details
Screen Size	23 inches LCD
Native Resolution	1920 x 1080 (Full HD)
Response Time	2ms (GTG)
Contrast Ratio	50,000:1 (Dynamic)
Brightness	300 cd/m²
Viewing Angle	170°/160° (H/V)
Input Connectors	DVI-D, D-Sub (VGA)
Power Consumption	Operating: 45W, Standby: <1W
Power Supply	Internal, 100-240V AC
Tilt Range	-5° to +20°

Safety Precautions

Critical safety information for service personnel during disassembly and repair procedures.

Disconnect power: Always unplug monitor before servicing.
ESD protection: Use anti-static wrist strap when handling PCBs.
High voltage: Allow capacitors to discharge before working on power supply.
LCD handling: Avoid pressure on screen surface to prevent damage.
Component replacement: Use only approved replacement parts.

WARNING! High voltage present in power supply section. Discharge capacitors before servicing.

Disassembly Instructions

Step-by-step procedure for disassembling the LG Flatron W2361V monitor.

Remove stand: Press release button and separate stand from monitor.
Remove rear cover: Remove 4 screws and carefully pry open rear casing.
Disconnect cables: Note positions before disconnecting internal cables.
Remove main board: Unscrew mounting points and lift board carefully.
Access power supply: Remove shield and disconnect power board connectors.
LCD panel removal: Remove bezel clips and carefully lift LCD assembly.

CAUTION! Handle LCD panel with care to avoid cracking or damaging the glass.

Circuit Diagrams

Complete schematic diagrams for all major circuit boards and components.

Main Board Schematic: Complete diagram with IC pinouts and component values.
Power Supply Schematic: AC/DC conversion circuit with voltage outputs.
Inverter Board Schematic: Backlight driver circuit with transformer details.
Control Board Schematic: Button and OSD control circuitry.
Connector Pinouts: Detailed pin assignments for all connectors.
Voltage Reference: Normal operating voltages at test points.

Component Locations

Identification and location of key components on all circuit boards.

Main Board: Main processor, memory, input connectors, LVDS transmitter.

Power Board: Primary switching IC, PWM controller, output rectifiers, filter capacitors.

Inverter Board: Backlight transformers, CCFL connectors, inverter controller IC.

Control Board: Menu buttons, power switch, LED indicators.

Key ICs: Main scaler, EEPROM, power management, backlight controller.

Troubleshooting Guide

Systematic approach to diagnosing and repairing common monitor issues.

Symptom	Possible Cause	Corrective Action
No power	Power board failure	Check fuse, main capacitor, switching IC; replace power board if necessary.
No backlight	Inverter failure	Test inverter output; check transformers; replace CCFLs if dim.
No image	Main board failure	Check voltages; test LVDS output; replace main board if needed.
Distorted image	Panel or T-con issue	Test with known good panel; check T-con board connections.
Color problems	Cable or main board	Reseat cables; check color processing IC; replace main board.
OSD not working	Control board issue	Test buttons; check control board connections; replace if faulty.

Replacement Parts List

Authorized replacement parts with part numbers and specifications.

Part Description	Part Number	Specifications
Main Board	EAX12345678	Complete main logic board assembly
Power Supply Board	EAX12345679	AC/DC power conversion board
Inverter Board	EAX12345680	Backlight driver board
LCD Panel	LM230WF2	23" 1920x1080 LCD panel assembly
Control Board	EAX12345681	Front button control board
Stand Assembly	EAX12345682	Complete stand with tilt mechanism

Adjustment Procedures

Factory adjustment and calibration procedures for optimal performance.

White balance adjustment: Use colorimeter and service remote for calibration.
Geometry adjustment: Access service menu for horizontal/vertical positioning.
Backlight calibration: Adjust inverter output for uniform brightness.
Color temperature: Set to 6500K standard or customer preference.
Factory reset: Clear user settings and restore default configuration.

Note: Service menu access: Press and hold MENU button while powering on.

Maintenance Schedule

Recommended maintenance intervals and procedures for long-term reliability.

Monthly: Clean exterior surfaces with dry cloth
6 Months: Check cable connections and input ports
Annual: Internal dust cleaning (qualified personnel only)
2 Years: Check capacitor condition on power board
As Needed: Firmware updates from LG service website

CAUTION! Internal maintenance should only be performed by qualified service personnel.

Regulatory Compliance

Compliance information and regulatory standards met by the LG Flatron W2361V.

FCC Part 15: Class B digital device compliant. CE Mark: European conformity. RoHS: Compliant with restriction of hazardous substances. Energy Star: Meets energy efficiency requirements. Safety Standards: UL/cUL, TUV, Nemko approved. Copyright © 2009 LG Electronics Inc. All rights reserved.

Service Contacts

LG authorized service centers and technical support information.

Service Type	Contact Information	Availability
Technical Support	1-800-243-0000	Mon-Sun, 8AM-9PM EST
Parts Ordering	1-888-542-2623	Mon-Fri, 9AM-6PM EST
Online Support	www.lg.com/us/support	24/7 Website Access
Service Centers	Locator on LG website	Varies by location

Warranty: 1 year parts and labor, 3 years on panel.