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Vertical lines running from the top to the bottom of a television screen are a distinctive fault pattern that many Nairobi TV owners encounter. TV vertical lines fix in Nairobi involves identifying whether the lines originate from the panel, the T-con board, or the connecting cables — and applying the right repair accordingly.
What Causes Vertical Lines?
Vertical lines in LCD TVs are almost always related to the column driver circuitry — the part of the display system responsible for controlling individual columns of pixels. The most common causes are:
- Damaged T-con board — Failure of the column driver outputs produces characteristic groups of vertical lines
- Loose or damaged LVDS/flat cable — The cable between the T-con and panel can develop faults from physical stress
- Panel COF (Chip-on-Film) damage — Pressure or flexing of the panel edges can damage the column driver ICs bonded directly to the glass
- Physical panel damage — Cracks or pressure damage to the LCD glass produce permanent vertical line patterns
Diagnosing and Fixing Vertical Lines
A technician performing a TV vertical lines fix will first identify the pattern: uniform lines across the entire screen suggest T-con failure; lines only on one side suggest localised COF damage or a cable fault; lines that shift or change suggest a loose connection.
T-con board replacement or flat cable reseating resolves most vertical line cases. COF damage — where the driver ICs on the glass edge are affected — is more complex and may not be fully repairable without panel replacement. A thorough diagnosis is essential before committing to parts expenditure.
