Need Repair Services in Nairobi?
Certified technicians dispatched to you — same day.
Horizontal lines on a TV screen disrupt viewing and often signal connection or hardware issues. Prologic Technologies, experts in TV repair, identifies key causes like faulty cables and panel failures. Quick diagnosis prevents escalation.
Prologic Technologies Contact Information
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Phone: 0723 763173
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Email: info@televisionrepair.co.ke
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Address: View Location
Common Causes
Horizontal lines typically stem from signal disruptions or internal faults. Loose or damaged HDMI, DisplayPort, or internal cables interrupt data flow, creating persistent lines across the screen. Overheating exacerbates this by stressing components; dust buildup blocks vents, causing thermal expansion in circuits. Electromagnetic interference from nearby speakers or routers also induces flickering lines, especially in older LCD models.
Graphics card or driver issues manifest as lines during signal processing. Outdated drivers or software conflicts scramble pixel data, mimicking hardware failure. Defective T-Con boards, which control row timing, produce uniform horizontal bands by failing to synchronize display rows.
Hardware Failures
Display panel defects dominate severe cases. Damaged LCD/OLED layers from impact or wear create dead pixel rows, rendering lines irremovable without panel replacement. Main logic boards falter under power surges, corrupting video output and drawing faint lines. These failures demand professional tools for diagnosis, as DIY access risks further damage.
Troubleshooting Steps
Start with basics: power cycle the TV by unplugging for 10 minutes to reset temporary glitches. Reseat all cables and test inputs; swap HDMI ports to isolate faults. Update firmware via manufacturer settings or USB, addressing software-induced lines. Clean vents with compressed air to combat overheating, ensuring 4-inch clearance.
For interference, relocate devices and use shielded cables. If lines persist post-reset, run built-in diagnostics—many smart TVs detect T-Con issues automatically.
Services Provided by Prologic Technologies
Prologic Technologies offers comprehensive TV repair in Nairobi, specializing in line issues.
| Service | Description | Turnaround Time |
|---|
| Service | Description | Turnaround Time |
|---|---|---|
| T-Con Board Repair | Diagnose and replace faulty timing control boards | 1-2 days |
| Panel Assessment | Inspect LCD/OLED for irreparable damage | Same day |
| Cable & Connection Fix | Secure/replace HDMI and internal wiring | 24 hours |
| Firmware Update | Install latest software to fix driver conflicts | 1 hour |
| Full Diagnostic | Advanced tools for overheating/interference | 2 hours |
| On-Site Repair | Home visits for Nairobi customers | Scheduled |
When to Call Experts
DIY fixes resolve 40% of cases, but persistent lines indicate panel or board failure—beyond user repair. Prologic uses diagnostic scopes to pinpoint roots, avoiding unnecessary replacements. Warranty risks rise with self-opening; certified techs preserve coverage. In Kenya's humid climate, proactive checks prevent recurrence.
Prevention Tips
Position TVs away from heat sources and magnets. Schedule annual cleanings and driver updates. Use surge protectors against power spikes. For optimal longevity, opt for quality cables matching your TV's resolution.