The LG 84LM9600-UB is an 84-inch Ultra HD LED TV featuring 4K resolution, Smart TV capabilities with webOS, built-in Wi-Fi, multiple HDMI inputs, USB connectivity, 3D functionality, and advanced picture processing technologies. This repair manual provides comprehensive guidance for service technicians including safety procedures, disassembly instructions, component replacement, troubleshooting, and technical specifications.
Before performing any repairs, ensure proper safety measures are followed to prevent injury and equipment damage.
| Hazard | Precaution |
|---|---|
| Electrical Shock | Disconnect power before servicing; discharge capacitors |
| High Voltage | Handle power supply with care; use insulated tools |
| Sharp Edges | Wear protective gloves during disassembly |
| LCD Panel | Handle carefully to avoid cracking; use proper support |
| ESD Protection | Use anti-static wrist strap when handling PCBs |
| Lifting Safety | Two-person lift required due to weight (over 100 lbs) |
Key components and main board layout for the 84LM9600-UB model.
WARNING! Always verify component compatibility before replacement.
Step-by-step instructions for safe disassembly of the television.
CAUTION! LCD panel is fragile and expensive - handle with extreme care.
Detailed instructions for replacing major components.
| Component | Replacement Procedure | Special Tools |
|---|---|---|
| Main Board | Disconnect all cables, remove screws, transfer thermal pads | Torx T10, Phillips #2 |
| Power Supply | Disconnect AC input and output connectors, remove mounting screws | Insulated screwdriver |
| T-Con Board | Disconnect LVDS cables, remove screws, handle with ESD protection | Anti-static wrist strap |
| LED Backlight | Full disassembly required, replace entire LED strip assembly | Suction cups, LED tester |
| Speakers | Remove rear cover, disconnect cables, remove mounting screws | Standard screwdriver set |
Common issues and diagnostic procedures for the 84LM9600-UB.
| Symptom | Possible Cause | Diagnostic Procedure |
|---|---|---|
| No Power | Power supply, main board | Check standby voltage, test power supply outputs |
| No Picture/Sound | Main board, T-con board | Test LVDS signals, check T-con voltages |
| Backlight Issues | LED strips, driver board | LED tester, check driver board outputs |
| Image Artifacts | T-con board, LVDS cable | Reseat LVDS cables, test T-con board |
| Wi-Fi Not Working | Main board, antenna | Check antenna connections, test Wi-Fi module |
| Sound Problems | Main board, speakers | Test audio outputs, check speaker connections |
Reference schematics for major circuit boards (available in full PDF manual).
Note: Complete schematics available in downloadable PDF version.
Procedures for updating television firmware and software.
WARNING! Interrupted firmware updates can brick the television.
Common replacement parts for the 84LM9600-UB model.
| Part Number | Description | Notes |
|---|---|---|
| EAX65409501(1.5) | Main Board Assembly | Includes Wi-Fi module |
| EAY64496702 | Power Supply Board | Universal voltage input |
| EBR79553801 | T-Con Board | 4K resolution support |
| EAX64985801 | LED Driver Board | Local dimming control |
| 6871Q-0584A | Remote Control | Magic Remote AN-MR600 |
| AY75616902 | Stand Assembly | Includes all hardware |
Recommended tools for servicing the 84LM9600-UB television.
LG warranty terms and service provider information.
Standard Warranty: 1 year parts and labor, 2 years panel warranty
Service Providers: Authorized LG service centers only
Warranty Claims: Required documentation: serial number, purchase date, service report
Contact: LG Electronics Service Division: 1-800-243-0000
Website: www.lg.com/us/support