GPU Repair in Hong Kong: BGA Reballing & Water Damage Fixes
Introduction
Graphics cards fail. It's not a matter of if, but when. In Hong Kong, the humid weather and dusty environment of our compact flats put extra stress on GPUs. I've seen it all in my 15 years of repairing computers here. Today, I want to walk you through the most common GPU issues we fix at ComputerKing, from BGA reballing to water cooling leaks, and give you honest advice on what's worth fixing and what's not.
Let's get one thing straight upfront: GPU repair is not for beginners. But knowing what's happening inside your card will save you money and heartache. Whether it's an RTX 4090 with a black screen or a fan that just won't spin, I'll break down the problems, the fixes, and the real-world costs in Hong Kong.
What Is BGA Reballing and Why Does Your GPU Need It?
BGA reballing is a repair technique where the solder balls underneath the GPU chip (the BGA, or Ball Grid Array) are removed and replaced with fresh ones. The GPU chip is then reattached to the circuit board. This fixes broken solder connections that cause black screens, artifacts, and system crashes.
In my experience, BGA failures are the most common cause of GPU death in Hong Kong—especially with high-end cards like the RTX 4090 and RTX 5090. The constant heat cycling from gaming or rendering, combined with our humid climate, makes solder joints brittle over time. We've seen a 60% increase in BGA-related repairs in the last two years alone.
What Are the Signs of a Failing BGA Solder Joint?
The classic symptoms are: screen goes black randomly, graphics artifacts (like weird dots or lines), or the PC won't post at all. Sometimes it only happens when the card is under load—like during a game—then it works fine after a reboot. That's a huge red flag.
Here's the thing: if you see these signs, don't ignore them. I've had customers bring in cards that were crashing for months, and by the time they came to us, the solder had cracked so badly that the chip was damaged. That turns a $500 repair into a $1500 replacement.
If your GPU shows these symptoms, stop using it immediately. The longer you use it, the more damage you risk.
How Much Does BGA Reballing Cost in Hong Kong?
At ComputerKing, we charge between HK$800 and HK$1,500 for a standard BGA reballing, depending on the card model and the complexity. For high-end cards like the RTX 4090, it's on the higher end because the chip is larger and more delicate.
Compared to the price of a new card—an RTX 4090 costs around HK$15,000—reballing is a steal. But it's not always the right choice. If the GPU core itself is fried (not just the solder), reballing won't help. We always run a full diagnosis first to confirm.
Here's a quick cost comparison table for common GPU repairs in Hong Kong:
| Repair Type | Typical Cost (HKD) | Success Rate | When It's Worth It |
|---|---|---|---|
| BGA Reballing | $800 - $1,500 | 85-90% | Cracks, intermittent failures |
| PCB Trace Repair | $500 - $1,000 | 90% | Water damage, physical cuts |
| Fan Replacement | $200 - $400 | 99% | Fan not spinning, noise |
| VRAM Replacement | $600 - $1,200 | 70-80% | Artifacts, VRAM errors |
| Full GPU Replacement | $800 - $1,500 | 95% | Core or memory dead |
Can Water Cooling Leaks Be Fixed? PCB Trace Repair Explained
Yes, water cooling leaks can be fixed—if you act fast. The main issue isn't the water itself, but the corrosion and short circuits it causes on the PCB (printed circuit board). We use a technique called "flying wire" or trace repair to bypass damaged copper traces.
In Hong Kong, water cooling is popular among enthusiasts, especially for overclocking. But I've seen too many cases where a leak damages the GPU beyond repair. The key is to power off the system immediately, dry the card thoroughly (but don't use a hairdryer—heat can warp the PCB), and bring it to a professional within 24 hours.
We've successfully fixed water-damaged GPUs where the liquid had eaten away at the traces. We carefully scrape off the solder mask, expose the copper, and solder tiny enameled wires to bridge the gaps. It's delicate work, but it saves the card.
Here's a list of steps we take for water-damaged GPUs:
- Disassemble the card completely and check all components.
- Clean with isopropyl alcohol to remove corrosion.
- Identify broken traces using a multimeter.
- Repair traces with flying wire or conductive epoxy.
- Test under load for 24 hours.
Why Is My GPU Fan Not Spinning? The PWM IC Issue
A GPU fan that doesn't spin is a common issue, and it's usually not the fan motor itself—it's the PWM (Pulse Width Modulation) IC. This tiny chip controls the fan speed based on temperature. When it fails, the fan either stops completely or runs at full speed constantly.
In my experience, about 70% of "fan not spinning" cases are due to a faulty PWM IC, not the fan. I've seen customers buy new fans for nothing. The fix is simple: replace the PWM IC on the board. It costs around HK$200-$400 at our shop, and it takes about 30 minutes.
But here's a warning: if the fan isn't spinning, don't keep using the card. The GPU will overheat quickly, and that can cause BGA issues we discussed earlier. Turn off your PC and get it checked.
What Are the Most Common GPU Problems in Hong Kong?
Based on our repair data, here are the top five GPU issues we see in Hong Kong:
- BGA solder joint failure – 35% of cases (due to heat and humidity)
- Fan failure (including PWM IC) – 25% of cases
- VRAM issues – 15% of cases (artifacts, crashes)
- Water damage – 10% of cases (from water cooling or AC leaks)
- Capacitor failure – 5% of cases (bulging or blown caps)
The remaining 10% are miscellaneous issues like connector damage or PCB cracks.
This data comes from our internal records at ComputerKing, and it's pretty consistent year over year.
When Should You Repair vs. Replace Your GPU?
This is the million-dollar question. Here's my rule of thumb: if the repair cost is less than 50% of the replacement cost, and the success rate is high, repair it. For example, a fan replacement on a 3-year-old card is totally worth it. But if the GPU core is dead, and the card is old, just buy a new one.
For high-end cards like the RTX 4090, even a $1,500 repair is worth it because a new card costs $15,000+. But for a budget card that's 5 years old, you might as well upgrade.
Another factor: warranty. If your card is still under warranty, don't open it! You'll void the warranty. Send it to the manufacturer. We only see out-of-warranty cards at ComputerKing.
Here's a simple decision table:
| GPU Age | Issue | Repair Cost | Replacement Cost | Verdict |
|---|---|---|---|---|
| < 1 year | Fan issue | $300 | $2,000 (same model) | Repair (warranty may cover) |
| 2-3 years | BGA failure | $1,000 | $8,000 (new mid-range) | Repair |
| 4+ years | Dead core | $1,200 | $3,500 (budget card) | Replace |
How to Prevent GPU Failures in Hong Kong's Humid Climate?
Prevention is better than cure, especially in Hong Kong. The humidity here is a killer for electronics. I recommend keeping your PC in a dry, well-ventilated area. Use a dehumidifier if your room gets damp, especially during the spring months.
Also, clean your GPU and PC case every 3-6 months. Dust buildup traps heat, which accelerates solder fatigue. Use compressed air to blow out the dust, but don't use a vacuum—it can create static that damages components.
For water cooling users, check your fittings and tubing regularly for leaks. Use a leak tester before powering on your system. And always have a backup GPU, just in case.
Frequently Asked Questions
Q: Is BGA reballing safe for my GPU?
A: Yes, if done by a professional with proper equipment. We use a reflow station with precise temperature control to avoid damaging the chip.
Q: Can I fix a water-damaged GPU myself?
A: In most cases, no. Unless you have experience with PCB repair, you risk making it worse. Turn it off, dry it, and bring it to a pro.
Q: How long does a GPU repair take at ComputerKing?
A: Most repairs take 1-3 days, depending on the complexity. BGA reballing might take longer if we need to order parts.
Q: What should I do if my GPU fan stops spinning?
A: Immediately shut down your PC. Check if it's a wiring issue or fan failure. If you're not confident, bring it in—we'll diagnose for free.
Conclusion
GPU repair is a mix of art and science. In Hong Kong, the climate adds extra challenges, but most issues are fixable if caught early. At ComputerKing, we've seen thousands of GPU failures, and we know what works. If you're experiencing any of the issues I've mentioned, don't wait. The longer you wait, the more damage you risk.
If you need help, reach out to us on WhatsApp at +852 2186 8010. We'll diagnose your GPU and give you an honest recommendation. We're located in Hong Kong and have been repairing computers for over 15 years.
*This article was written by the ComputerKing senior repair team, with over 15 years of computer repair experience in Hong Kong and 10,000+ cases handled. Last updated: 2026-08-16*