1. No Power or Dead TV
One of the most frequent issues related to the motherboard is when the TV won’t power on at all. This is often due to a faulty power supply section on the motherboard, blown capacitors, or a failed IC (integrated circuit).
Solution: Technicians can replace damaged capacitors, repair broken power traces, or swap out defective ICs to restore power. In some cases, replacing the entire motherboard may be necessary.
2. TV Turns On but No Display
If your TV powers up but there’s no picture, the problem may lie in the T-Con communication from the motherboard or a signal processing fault.
Solution: This can be resolved by diagnosing the HDMI/AV signal paths, reflowing the BGA chip, or repairing connectors and circuit paths. Sometimes a firmware update from the service port is also effective.
3. No Sound Output
When the motherboard fails to process or route audio signals, your TV may show a picture but have no sound. This may be due to audio IC failure, corrupted firmware, or broken audio paths.
Solution: The audio chip can be replaced, or the firmware reflashed. Checking and fixing the audio output ports may also solve the issue.
4. HDMI or USB Ports Not Working
A common issue involves one or more HDMI or USB ports becoming unresponsive. This could be from physical damage, power surges, or IC failures responsible for port management.
Solution: Damaged ports can be replaced, and the control ICs for HDMI or USB inputs can be reprogrammed or replaced as needed.
5. TV Keeps Restarting or Stuck on Logo (Boot Loop)
Boot loop problems are usually linked to firmware corruption or a short circuit on the motherboard.
Solution: Reflashing the firmware or using a USB software update can resolve software issues. If hardware-related, components such as memory chips or processors may need rework or replacement.
6. Remote Control Not Working Despite New Batteries
Sometimes the IR sensor on the motherboard is the issue, especially if it’s not receiving or processing the signal from the remote.
Solution: Technicians can replace the IR receiver or ensure that the signal pathway from the IR board to the motherboard is intact.
7. Overheating and Sudden Shutdowns
Overheating is often due to poor ventilation, failing components, or excessive current draw on the motherboard.
Solution: A cleanup and thermal paste application may help, along with replacing heating components such as regulators or processors.
8. Wi-Fi or Smart Functions Not Working
For smart TVs, the motherboard manages network connections. If Wi-Fi or apps are not functioning, this could be a sign of a failed Wi-Fi module or software issue.
Solution: The Wi-Fi module can be replaced, or the firmware reinstalled to restore full smart functionality.
Conclusion: Trust Refitec to Repair All TV Motherboard Issues
TV motherboard issues can range from simple port failures to complex signal processing errors. Whether it’s power problems, no display, or HDMI faults, Refitec has the expertise and tools to repair and restore your TV back to perfect working condition.
📞 Call Refitec Today – 0704843613
🌐 Visit: refitec.co.ke
Let Refitec handle your TV with care and precision — affordable, professional, and fast service across Kenya!
