Smart TV screen showing lines
4.5
Vertical or horizontal lines appear across the television screen.
Symptoms
- Thin vertical lines
- Thick horizontal bands
- Colored lines
Possible Causes
- Loose LVDS cable
- T-Con board failure
- Panel damage
Step-by-Step Fix
1
The Tap Test
Gently tap the back of the TV near the ports. If the lines flicker, a cable is loose.
2
Check Different Inputs
If lines appear on the menu, the panel or T-Con is faulty.
3
Power Cycle
Unplug for 10 minutes to discharge the T-Con board.
When to See a Technician
Vertical lines that don't change are usually a sign of "tab bonding" failure in the panel, which is often unrepairable.
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