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Onsite PC Repair Singapore: Screen Glitch Traced to a Faulty Monitor | Mansa Computers
Quick answer: This onsite PC repair in Singapore started as a suspected GPU fault. Remote troubleshooting didn’t resolve the issue to stop the screen glitch, so our technician drove over and swapped the GPU onsite. The glitch stayed. A spare monitor confirmed the original monitor had failed. Diagnosed and resolved onsite under Mansa's first-year warranty, no charge.
Last updated: November 2025
Job Summary
Service
Onsite PC repair in Singapore: screen glitch diagnosis under warranty
Customer's Problem
Screen kept glitching. Cable swaps, a GPU driver reinstall, and a remote display test did not fix it.
What We Did
Drove onsite, swapped the GPU to rule it out, then confirmed the fault was the customer's monitor.
Result
Customer connected to a spare monitor. Screen works. Covered under warranty, no charge.
Watch the Repair
Why Was the Screen Glitching?
A customer needed onsite PC repair in Singapore after his screen started glitching. He was overseas, so his family helped our technician troubleshoot from home: swapped the display cable, reinstalled GPU drivers, and tested with a spare display. None of it stopped the glitch. We concluded the GPU was the likely fault and sent a technician over.
Root Cause
The customer's monitor had failed. The GPU and cables were fine throughout. Remote troubleshooting couldn’t fully confirm the cause because all tests were done on the same monitor. Once our technician arrived and spotted a second monitor, connecting it took under a minute to confirm the fault.
What We Checked First
- Display cable connections (family swapped at home, no change)
- GPU drivers (full reinstall at home, glitch continued)
- GPU hardware (swapped onsite with replacement unit, glitch stayed)
- Monitor (spare monitor connected onsite, glitch gone)
How We Fixed It
- Remote diagnostics: Walked the customer's family through a cable swap and a full GPU driver reinstall. The screen still glitched after both steps.
- Technician dispatched: Couldn't confirm the fault from the information we had. Our technician drove to the customer's home with a replacement GPU. Under Mansa's first-year onsite warranty, the callout and transport are covered.
- GPU ruled out: Swapped the GPU onsite. Screen still glitched. That ruled out the GPU as the cause.
- Monitor confirmed: Spotted a spare monitor at the customer's place. Connected it. Screen worked. The original monitor had failed.
Photo Guide
Swipe or use arrows to see the repair process.
Preparing the Replacement GPU
Tool kit and replacement GPU prepared for the onsite warranty visit before installation.
Swapping the GPU
Replacement GPU installed onsite. The screen glitch stayed. That ruled the GPU out as the cause.
Testing the Monitor
Display still glitching during onsite testing, showing the issue had not been resolved at this stage.
Switching to a Spare Monitor
Connected to a spare monitor and the display returned to normal, confirming the original monitor had failed.
“When a screen glitches, the GPU often gets the blame first. We work through the list before swapping anything: cable, driver, display output, then GPU. Swapping the GPU onsite and still seeing the glitch told us exactly where to look next.”
- Mansa ComputersFinal Result
PC is running well. Screen works on the replacement monitor. The original monitor had been the fault from the start.
Under Mansa's first-year onsite warranty, our technicians come to you when we can identify the fault beforehand. If the cause needs workshop testing, we collect the PC, run in-depth diagnostics at our Ubi workshop, and return it within 1-3 days. Transport is covered both ways, no charge.
Cost Breakdown
| Service | Cost (SGD) |
|---|---|
| Remote diagnostics (cable and driver check) | Covered under warranty |
| Onsite callout and transport | Covered under warranty |
| Total | Covered under warranty |
This job was covered under Mansa's first-year onsite warranty. Warranty terms depend on when the PC was purchased and the nature of the fault. Press the WhatsApp button on the right to check your coverage.
Frequently Asked Questions
Does Mansa offer onsite PC repair in Singapore?
Yes. Under Mansa's first-year onsite warranty, our technicians come to your home or office when we can identify the fault beforehand. If the cause needs more in-depth testing with spare parts, we collect the PC from you, work on it at our Ubi workshop (1 Ubi View, Focus One), and return it within 1-3 days. Transport is covered both ways.
How does Mansa's onsite warranty work?
Mansa's custom PC packages include a 3-year hardware warranty with first-year onsite warranty. In the first year, if we can confirm the fault remotely, we drive to you with the replacement part and fix it on the spot. If the fault needs workshop testing, we pick up the PC and return it within 1-3 days. After the first year, we move to workshop service, but pickup and return are still available.
My PC screen is glitching - is it the GPU or the monitor?
Connect to a different monitor first. If the glitch stops, the original monitor has failed. If it continues, the GPU, display cable, driver, or GPU becomes the more likely cause. WhatsApp us your symptoms and we will walk you through the next step before any parts are swapped.
PC Screen Glitching in Singapore?
Tell us what you're seeing and when it started. We'll help you figure out the next step.
Press the WhatsApp button on the right to speak with us about your PC issue.
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