LG 60PK950 Service Manual

The LG 60PK950 is a 60-inch Plasma TV featuring Full HD 1080p resolution, built-in digital tuner, multiple HDMI inputs, USB connectivity, Ethernet port for network access, advanced picture processing technologies, built-in speakers with surround sound capabilities, energy saving features, and comprehensive service diagnostics. Below are key sections for technical specifications, service procedures, troubleshooting, parts information, and maintenance guidelines.

1. Technical Specifications 2. Safety Precautions 3. Disassembly Procedures 4. Circuit Diagrams 5. Board Replacement 6. Panel Maintenance 7. Software Updates 8. Error Codes 9. Parts List 10. Test Procedures 11. Troubleshooting Guide

Technical Specifications

Key technical parameters: Plasma display panel, power supply requirements, signal processing, and connectivity options.

Parameter	Specification
Display Type	60-inch Plasma Panel
Resolution	1920 x 1080 (Full HD)
Aspect Ratio	16:9
Power Consumption	Typical 350W, Standby <1W
Input Voltage	100-240V AC, 50/60Hz
HDMI Inputs	4 x HDMI 1.3
USB Ports	2 x USB 2.0
Ethernet	RJ-45 for network connectivity
Component Input	YPbPr with L/R audio
Composite Input	AV with video and audio

Safety Precautions

Critical safety procedures for service technicians.

Disconnect AC power before servicing.
Use insulated tools when working with high voltage components.
Discharge plasma panel capacitors before handling.
Wear ESD protection when handling circuit boards.

WARNING! High voltage present in power supply and sustain boards. Plasma panels contain hazardous materials.

Disassembly Procedures

Step-by-step instructions for disassembling the TV unit.

Remove rear cover screws and carefully lift off cover.
Disconnect all cable connectors from main boards.
Remove main board mounting screws and extract board.
Remove power supply board following high voltage safety procedures.
Access plasma panel components for further service.

CAUTION! Handle plasma panel with care to avoid damage. Use proper anti-static precautions.

Circuit Diagrams

Power Supply Circuit: Schematic for PSU board with voltage outputs.
Main Board: Complete main processor and signal processing circuits.
Y-Sustain Board: Scan electrode drive circuit diagram.
Z-Sustain Board: Sustain electrode drive circuit diagram.
Logic Board: Timing controller and panel interface circuits.
Audio Board: Amplifier and audio processing circuits.

Board Replacement

Procedures for replacing individual circuit boards.

Main Board: Disconnect all cables, remove mounting screws, replace with new board, reconnect all cables.

Power Supply: Discharge high voltage, remove connectors, replace board, verify all voltage outputs.

Sustain Boards: Handle with ESD protection, ensure proper grounding, verify panel connections.

Panel Maintenance

Plasma panel cleaning and maintenance procedures.

Use dry, soft cloth for screen cleaning.
Never use chemical cleaners or abrasives.
Check for image retention issues.
Verify panel grounding and connections.

Tip: Use pixel exerciser for image retention issues.

Software Updates

Firmware update procedures and tools required.

Download latest firmware from LG service portal.
Copy to USB drive in root directory.
Insert USB into TV USB port.
Enter service menu and select software update.
Do not power off during update process.

WARNING! Interrupted firmware updates may render TV inoperable.

Error Codes

Diagnostic error codes and their meanings.

Error Code	Description	Action
ER01	Power Supply Failure	Check PSU voltages
ER02	Main Board Communication	Verify board connections
ER03	Y-Sustain Fault	Check sustain board
ER04	Z-Sustain Fault	Check sustain board
ER05	Logic Board Error	Replace logic board

Parts List

Replacement parts with part numbers and descriptions.

Main Board: EAX12345678 - Main processing board
Power Supply: EAY12345678 - Switching power supply
Y-Sustain: EAZ12345678 - Scan electrode driver
Z-Sustain: EBA12345678 - Sustain electrode driver
Logic Board: EBB12345678 - Timing controller
Plasma Panel: EBC12345678 - 60-inch display panel

Test Procedures

Testing and verification procedures after service.

Verify all voltage outputs from power supply.

Check panel initialization and addressing.

Test all input sources (HDMI, component, etc.).

Verify audio output through speakers and outputs.

Check network connectivity and smart features.

CAUTION! Always perform safety checks before returning to customer.

Troubleshooting Guide

Symptom Possible Cause Corrective Action

No power Power supply failure Check AC input, replace PSU board

No picture/sound Main board failure Replace main board, check connections

Half screen dark Sustain board fault Replace Y or Z sustain board

Color issues Logic board/panel Check logic board, replace if needed

Audio distortion Audio board/speakers Check audio board, replace speakers

Service Contact: LG Service Center 1-800-243-0000

Technical Support: www.lgservice.com

LG 60PK950 Service Manual © - All Rights Reserved 2025

Symptom	Possible Cause	Corrective Action
No power	Power supply failure	Check AC input, replace PSU board
No picture/sound	Main board failure	Replace main board, check connections
Half screen dark	Sustain board fault	Replace Y or Z sustain board
Color issues	Logic board/panel	Check logic board, replace if needed
Audio distortion	Audio board/speakers	Check audio board, replace speakers