LG TV UP8000 LINES ON SCREEN General Troubleshooting
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
86%
CONF
|
T-Con Board
The T-Con board translates the Main Board's video signal into high-speed instructions for the LCD panel's source drivers. Lines on the screen, particularly vertical ones, typically indicate a failure in this timing logic where synchronization data is lost or corrupted. Replacing this board is the primary hardware solution for addressing artifacts that appear across all inputs and the internal menu.
|
|
|
9%
CONF
|
Main Media Board
On many UP8000 models, the timing controller functions are integrated directly into the Main Board SoC. If a 'Picture Test' shows the lines are present even on internal apps, and a T-Con replacement is either not possible or fails, the Main Board's LVDS (Low-Voltage Differential Signaling) output stage is the likely failure point.
|
|
|
5%
CONF
|
8K Ultra High Speed HDMI 2.1 Cable
As highlighted in LG's troubleshooting guide, poor HDMI connections can cause color bleeding and signal interference that mimics screen defects. A cable with insufficient bandwidth or damaged shielding can introduce noise that manifests as flickering lines, especially when processing 4K signals common on the UP8000.
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DIY Repair Guide
Watch exactly how to replace the T-Con 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.