LG TV C2 OLED BLACK SCREEN SOUND WORKING General Troubleshooting
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
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86%
CONF
|
Main PCA (Main Board)
The Main Board is responsible for processing video data and generating the On-Screen Display (OSD). Since the audio is functioning, the SoC is active, but a failure in the video output stage or the V-by-One transmitter prevents image data from reaching the panel. This is the primary component to replace when UI/Menus are also invisible.
|
|
|
9%
CONF
|
Power Supply (PSU) Board
OLED panels require specific high-voltage rails to drive pixel emissivity. If the Power Supply fails to provide these specific voltages while still providing the 12V/13V logic power used by the Main Board for audio and SMART functions, the screen will remain black despite the TV being 'on'.
|
|
|
5%
CONF
|
Internal Ribbon Cable Set (LVDS/V-by-One)
These cables transfer high-speed video data from the Main Board to the panel's timing logic. If the cables become unseated or suffer from pin corrosion/oxidation, the handshake between the board and panel fails, resulting in a black screen while the audio (which travels via a different path) remains unaffected.
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DIY Repair Guide
Watch exactly how to replace the Main PCA (Main Board).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.