LG 22LE5300 Service Manual

The LG 22LE5300 is a 22-inch LED TV featuring Full HD 1080p resolution, built-in digital/analog tuner, multiple connectivity options including HDMI, USB, component/composite inputs, energy-saving technology, and advanced picture/sound settings. This service manual provides technical specifications, disassembly instructions, troubleshooting guides, and repair procedures for qualified service technicians.

1. Product Overview 2. Technical Specifications 3. Disassembly Instructions 4. Main Board Layout 5. Power Supply Board 6. LED Backlight System 7. Troubleshooting Flowcharts 8. Error Codes 9. Firmware Update 10. Safety Precautions 11. Parts List

Product Overview

The LG 22LE5300 features LED backlight technology with 1920x1080 resolution, 60Hz refresh rate, and multiple input options for versatile connectivity.

Component	Description
Main Board	EAX64456501 - Handles signal processing and system control
Power Supply	EAY62836601 - Provides 12V, 5V, and 3.3V power rails
LED Backlight	Direct LED system with 36 LED modules
LVDS Cable	30-pin connector for panel interface
T-Con Board	Integrated in panel assembly
IR Sensor	Front panel infrared receiver
Control Buttons	Power, Menu, Volume, Channel, Input
Speakers	2x 5W stereo speakers

Technical Specifications

Model: 22LE5300
Screen Size: 22 inches LED
Resolution: 1920 x 1080 Full HD
Brightness: 250 cd/m²
Contrast Ratio: 1000:1 (Static)
Response Time: 5ms
Viewing Angle: 178°/178°
Tuner: ATSC/NTSC/QAM
Inputs: 2x HDMI, 1x Component, 1x Composite, 1x VGA, 1x USB, RF Input
Power Consumption: 30W (typical), <0.5W (standby)
Power Supply: 100-240V AC, 50/60Hz

Disassembly Instructions

Follow these steps carefully to disassemble the TV for service and repair.

Remove stand: Lay TV face down on soft surface, remove 4 screws securing stand.
Remove rear cover: Remove 12 screws from back cover, carefully separate cover from front bezel.
Disconnect cables: Unplug LVDS cable, power cables, and speaker connectors from main board.
Remove main board: Remove 4 screws securing main board to chassis.
Remove power supply: Remove 6 screws and disconnect all power connectors.
Access LED backlight: Remove panel assembly screws and carefully separate layers.

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

Main Board Layout

Main Board EAX64456501 component identification and test points.

Component	Location	Function
IC100	U1	Main Processor
IC200	U2	Memory (DDR3)
IC300	U3	HDMI Switch
IC400	U4	Audio Processor
TP1	Test Point 1	3.3V Standby
TP2	Test Point 2	12V Main
TP3	Test Point 3	1.2V Core
J100	Connector	LVDS to Panel
J200	Connector	Power Input

Power Supply Board

Power Supply Board EAY62836601 specifications and troubleshooting.

Input: 100-240V AC, 50/60Hz
Outputs: +12V/3A, +5V/2A, +3.3V/1A
Standby Power: +5VSB/0.5A
Main Fuse: F101 - T3.15A/250V
Primary IC: IC101 - FSL206MR
Secondary IC: IC201 - 431A

Common Issues: No power - Check F101, bridge rectifier, main capacitor C101 (450V/82μF). Intermittent power - Check solder joints on transformer T101.

LED Backlight System

The direct LED backlight system consists of 36 LED modules arranged in 6 strings of 6 LEDs each.

LED Driver Board: Located on left side of panel assembly
LED Voltage: 60V DC typical per string
Current: 120mA per string
LED Type: 3528 SMD LEDs
Test Procedure: Measure voltage at LED connector - should be 60V ±5V
Replacement: Replace entire LED strip if individual LEDs fail

CAUTION! LED driver produces high voltage. Discharge capacitors before servicing.

Troubleshooting Flowcharts

Systematic approach to diagnosing common problems.

Symptom	First Check	Next Steps
No Power	Check AC input, fuse F101	Measure standby 5V, check main processor
No Backlight	Check LED voltage at connector	Test LED strings, check driver board
No Picture	Check LVDS cable connection	Measure T-Con voltages, test main board output
No Sound	Check speaker connections	Test audio IC, check input signals
HDMI Issues	Check source and cable	Test HDMI switch IC, check EDID

Error Codes

Diagnostic error codes displayed via LED blink patterns.

1 Blink: Main board communication error
2 Blinks: Power supply fault
3 Blinks: LED backlight failure
4 Blinks: T-Con board error
5 Blinks: Panel timing controller issue
6 Blinks: Temperature sensor fault

Reset Procedure: Unplug TV for 2 minutes, hold power button for 30 seconds, reconnect power.

Firmware Update

Firmware update procedure via USB service port.

Download latest firmware from LG service website
Format USB drive to FAT32
Copy .epk file to root directory of USB drive
Insert USB into service port while TV is off
Press and hold volume down button on TV, then press power
Release buttons when update screen appears
Do not power off during update (approx. 5 minutes)
TV will restart automatically when complete

WARNING! Incorrect firmware or power interruption may permanently damage TV.

Safety Precautions

Critical safety information for service technicians.

Always disconnect AC power before servicing
Discharge large capacitors before handling
Use insulated tools when working with high voltage
Replace safety components only with specified parts
Ensure proper grounding of all test equipment
Handle LCD panel with extreme care to avoid breakage
Work in well-ventilated area when soldering

DANGER! High voltage present in power supply and LED driver circuits.

Parts List

Replacement parts and ordering information.

Part Number	Description	Qty
EAX64456501	Main Board Assembly	1
EAY62836601	Power Supply Board	1
6841ERB001A	LED Backlight Strip	2
LGZ61418601	LVDS Cable	1
3748ERZ001A	IR Sensor Board	1
LGZ61419601	Speaker Assembly	2
3748ERZ002A	Control Button Board	1
F101	Fuse T3.15A/250V	1

Ordering: Contact LG Parts Department at 1-800-243-0000 or visit www.lgservice.com