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PC Warranty Repair Singapore: Faulty LAN Port Fixed With Motherboard Replacement | Mansa Computers
Quick answer: This PC warranty repair in Singapore covered a faulty LAN port on the motherboard. The LAN port only connected when the cable was held at a specific angle, a clear sign of a damaged socket. We replaced the motherboard within a day under warranty, no charge to the customer.
Last updated: October 2025
Job Summary
Service
PC warranty repair in Singapore: motherboard replacement for a faulty LAN port
Customer's Problem
LAN port not working. The cable only connected at one specific angle, with no stable connection otherwise.
What We Did
Confirmed the LAN port on the motherboard was faulty. Replaced the motherboard under warranty.
Result
LAN connected first try, straight in. PC back to the customer within a day. No charge.
Watch the Repair
Why Was the LAN Port Not Working?
A customer brought in their PC for a warranty repair in Singapore after the LAN port stopped working. The cable would not connect properly when plugged in straight. The only way to get any signal was to hold the cable at a specific angle, which is not a usable fix for a desktop PC.
Root Cause
The LAN port on the motherboard had a damaged socket. When a network cable only connects at one angle, the internal contacts inside the port are bent or worn. LAN ports are soldered directly onto the motherboard, so replacing the port in isolation is not practical. The correct fix is a full motherboard replacement, which also gives the customer a fresh board under warranty.
What We Checked First
- LAN cable (tested with a different cable, same result)
- LAN port physical condition (cable only seated at one angle, confirmed socket damage)
- Network adapter in Windows (device detected but no stable connection)
- Rest of the system (storage, RAM, GPU all checked before motherboard swap)
How We Fixed It
- LAN port fault confirmed: Tested with a replacement cable. The port still only connected at one specific angle. The motherboard LAN socket was the fault, not the cable or network setup.
- Motherboard replacement sourced: Identified a compatible replacement motherboard. The part and labour were covered under Mansa's warranty, no cost to the customer.
- Motherboard swapped: Replaced the motherboard. LAN cable plugged in straight, connected on the first try.
- Full system check and return: Confirmed Windows, storage, and all ports working after the swap. PC returned to the customer within a day.
Photo Guide
Swipe or use arrows to see the repair from start to finish.
PC Arrived
System received for diagnosis. Customer reported LAN connection issues before testing began.
Testing the LAN Port
LAN connection tested at the rear I/O. Cable only worked at a specific angle, confirming a faulty motherboard socket.
New Board Installed
Replacement motherboard installed. LAN cable plugged in straight and connected on the first try.
Final Testing
System powered on and fully tested after replacement. All functions were working normally, and the PC was returned to the customer within a day.
"When a LAN port only works at one angle, the cable and network are fine. The socket is the fault. We don't try to re-solder individual ports. A motherboard swap is cleaner, faster, and the customer gets a replacement board covered under warranty."
- Mansa ComputersFinal Result
LAN is stable. Cable plugs in straight, connects first try. PC was back with the customer within a day of coming in.
Mansa's warranty covers faults like this: the part and the labour. Customers don't pay extra when something fails within the warranty period. If you're not sure whether your issue is covered, WhatsApp us and we'll check.
Cost Breakdown
| Service | Cost (SGD) |
|---|---|
| LAN port diagnosis | Covered under warranty |
| Replacement motherboard (part) | Covered under warranty |
| Motherboard installation and system check | Covered under warranty |
| Total | Covered under warranty |
This repair was covered under Mansa's hardware warranty. Warranty terms depend on when the PC was purchased and the component involved. Press the WhatsApp button on the right to check your coverage.
Frequently Asked Questions
What does PC warranty repair in Singapore cover?
Mansa's warranty covers hardware faults that occur within the warranty period: failed components like motherboards, GPUs, RAM, and storage. The part and the labour are covered, no extra charge. If you're unsure whether your fault qualifies, WhatsApp us a description of the issue and we'll check your coverage against the purchase date.
My LAN port is not working. Is it the cable or the motherboard?
Test with a different cable first. If the new cable works fine, the original cable is the fault. If the LAN port still doesn't connect, or only connects when the cable is held at a specific angle, the socket on the motherboard is damaged. At that point the motherboard needs to be replaced, as LAN ports are soldered to the board and cannot be swapped out on their own.
How long does a warranty motherboard replacement take in Singapore?
At Mansa Computers, most motherboard replacements are done within 1 day once we have a compatible replacement in stock. We carry a range of boards for common configurations. If a specific board needs to be ordered, we'll give you a clear timeline before any work begins.
PC Fault Covered Under Warranty in Singapore?
Tell us what's wrong and when you bought the PC. We'll check your coverage and let you know the next step.
Press the WhatsApp button on the right to speak with us.
Need some help with your PC?
Drop us an email or Whatsapp text!
Give us a brief description of the issue you're facing and we'll get back to you in the quickest time possible.
Otherwise, if you have any feedback or PC-related questions, don't hesitate to reach out to us!