To Next PageTo Next Page
Need help?Do you have a question about the LG OLED55C9PTA and is the answer not in the manual?
General| Screen Size | 55 inches |
|---|---|
| Display Type | OLED |
| Refresh Rate | 120 Hz |
| Smart TV | Yes (webOS) |
| Processor | α9 Gen 2 Intelligent Processor |
| HDMI Ports | 4 |
| USB Ports | 3 |
| Wi-Fi | Yes (802.11ac) |
| Bluetooth | Yes (5.0) |
| Resolution | 3840 x 2160 |
| HDR Support | HDR10, Dolby Vision, HLG |
Essential safety parts must be replaced with the same components to prevent hazards.
Isolation transformer usage, fuse replacement, wire placement, and AC leakage current checks.
Procedure for checking AC leakage current when the receiver is unplugged.
Procedure for checking AC leakage current while plugged in, using a resistor and capacitor.
Precautions for unplugging the receiver, testing high voltage, using chemicals, cleaning contacts, and handling ES devices.
Techniques to prevent damage to ES devices from static electricity during handling.
Guidelines for using soldering irons, solder, cleaning surfaces, and soldering techniques.
Specifies the LED TV models covered by this chassis specification.
Outlines the standard conditions for testing TV components and performance.
Details the test methods for performance and other specifications.
Lists market, broadcasting system, program coverage, and receiving system specifications.
Lists supported input formats for CVBS and Component inputs.
Steps for updating TV software via USB drive.
Steps for updating TV software via network connection.
Block diagram illustrating the System-on-Chip (SoC) architecture and its connections.
Block diagram detailing the Tuner and Conditional Access Module (CI) connections.
Block diagram showing video and audio input/output connections.
Block diagram illustrating the HDMI 2.1 interface and its components.
Block diagram showing connections for USB, Wi-Fi, M-Remote, and UART interfaces.
Diagram showing the Inter-Integrated Circuit (I2C) bus map and connected devices.
Safety notice regarding replacement parts identified by a triangle symbol.
Instructions for removing the stand cover from the back of the TV.
Steps to remove screws and detach the stand from the back cover.
Instructions for removing the power cord from the back cover.
Steps for removing screws and latches to detach the back cover.
Instructions for removing a screw to detach the Wifi/Jog assembly.
Steps for removing latches to detach the IR assembly.
General instruction to disconnect all cables within the TV.
Instructions for removing the speakers from the TV.
Steps for removing screws to detach the Main PCB and Power Supply Unit (PSU).
Instructions for removing screws to detach the stand guide and fixer.
Steps for removing screws to detach the VESA bracket.
Troubleshooting flowchart for no video or normal audio issues.
Troubleshooting flowchart for no video and no audio issues.
Troubleshooting flowchart for picture broken or freezing issues.
Troubleshooting flowchart for color error issues.
Troubleshooting for bars, residual image, light spots, and external device color errors.
Troubleshooting flowchart for no power issues.
Troubleshooting for power turning off unexpectedly or automatically.
Details power off history causes and action contents.
Lists various power off conditions and explanations.
Troubleshooting flowchart for no audio or normal video.
Troubleshooting for distorted, discontinuous, or noisy audio.
Troubleshooting for remote control and local switch operation.
Troubleshooting for Magic Remote control operation.
Troubleshooting for Wi-Fi connectivity and operation.
Troubleshooting for external device recognition issues.
Troubleshooting for circuit noise and mechanical noise issues.
Troubleshooting for physical damage or defects to the TV exterior.
Details on checking Vx1 lock and BDP points for video errors.
Procedure for checking and adjusting White Balance settings.
Method to check tuner input signal strength and quality.
Procedure to check software and other version information.
Instructions for checking tuner components and signal strength.
Connection diagram illustrating signal flow for video issues.
Procedure to check the reconnection of the Link Cable (Vx1).
Examples of color smear due to poor cable contact.
Examples of excessive red color due to FFC cable contact.
Examples of screen darkness due to FFC cable disconnection.
Examples of excessive green color due to poor FFC cable connection.
Examples of color spread due to Vx1 cable connection problems.
Examples of screen stopping due to foreign substances on the cable PIN.
Examples of screen noise due to bit noise or Main IC problems.
Examples of dark picture issues on the left side of the screen.
Examples of broken picture due to tuner or inner side quality problems.
Examples of broken screens in a horizontal manner.
Examples of blurry screen corners.
Examples of color spread on the screen.
Examples of blurry pictures on the screen.
Examples of broken pictures, color spread after 10 minutes.
Examples of right-side screen issues.
Examples of screen picture spread problems related to the LG logo.
Examples of right-side picture problems during heat run.
Examples of vertical bars, unrepairable cases requiring module exchange.
Examples of image broken due to Source Driver issues.
Examples of white dots caused by panel issues.
Examples of vertical line dimming due to source drive IC.
Examples of burnt modules.
Examples of horizontal lines due to module damage.
Examples of line defects due to module damage.
Examples of press damage, unrepairable cases requiring module exchange.
Examples of vertical bars due to source drive IC.
Examples of vertical noise and brightness differences, unrepairable.
Examples of green light issues due to compensation errors.
Examples of color differences due to compensation errors.
Examples of modules with no image, unfixable.
Examples of burnt modules, unfixable.
Examples of screen Mura issues, unfixable.
Illustration showing No Light condition for PSU diagnosis.
Illustration showing normal picture/sound for PSU diagnosis.
Procedure to check the power indicator status for no power issues.
Procedure to check power input voltage and ST-BY voltage.
Method to check POWER OFF MODE and related statuses.
Procedure to check audio settings in the menu when there's no audio.
Method to check voltage and speaker condition for audio issues.
Procedure to check remote control operation and IR sensor.
Procedure to check Wi-Fi and Motion Remote operation.
Instructions on how to access the service remote control functions.
Defines functions of various buttons on the service remote control.
Details connection to Bluetooth via the remote control.
Explanation of the IN-START function on the remote.
Explanation of the X-STUDIO function for HDD access.
Explanation of the MENU function for user settings.
Explanation of the EXIT function to leave current modes.
Explanation of TIME SHIFT for recorded content navigation.
Explanation of the MUTE function for volume control.
Explanation of the IN-STOP function for factory mode.
Explanation of VOL +/- for volume adjustment.
Explanation of CH +/- for channel selection.
Explanation of AV connection for external inputs.
Explanation of Component connection.
Explanation of HDMI connection.
Explanation of DVI connection.
Steps to check after replacing the Main Board, including model and white balance.
Smart JIG Power/Video Check JIG model and usage.
Smart JIG Multi Gender model and usage.
Diagram showing defect diagnosis paths between Power Board and Main Board.
JIG connection details for 15Y LF/UF Series models.
JIG connection details for 16Y OLED B6 models.
JIG connection details for 15Y OLED models.
JIG connection details for 17/18/19Y OLED models.
JIG connection details for 16Y/17Y LED UH/SJ models.
List of OLED and LED models compatible with the JIG.
Image showing the Smart JIG Multi Gender itself.
Image showing how to connect the Smart JIG to the TV power.
Image showing power board voltage check.
Image showing LCD MODEL switch setting for JIG.
Important notes on setting up the JIG for correct power diagnosis.
Steps for diagnosing 15Y OLED Power Board (Part 1).
Steps for diagnosing 15Y OLED Power Board (Part 2).
Steps for diagnosing 16Y OLED(B6) Power Board.
Steps for diagnosing 16Y OLED(C6) Power Board.
Steps for diagnosing 16Y OLED(E6) Power Board.
Steps for diagnosing 16Y OLED(G6) Power Board.
Steps for diagnosing 17Y OLED(B7/C7/E7/G7) Power Board.
Steps for diagnosing 17Y OLED(W7) Power Board.
Steps for diagnosing 16Y/17Y LED 18Pin Power Board.
Steps for diagnosing 16Y LED(UH95/UH96) Power Board.
Steps for diagnosing 16Y/17Y LED(UH85/UH93) Power Board.
Steps for diagnosing 16Y/17Y LED 12Pin Power Board.
Steps for diagnosing 16Y LED 12Pin Power Board.
Steps for diagnosing 17Y LED 28Pin Power Board.
