Most people prefer to build a custom PC because of its DIY perks. You can troubleshoot any PC hardware/software-related issues yourself & individually buy or repair any corresponding PC components.
But beware! Just because you can, doesn’t mean you should. Some electrical PC components are too fragile or dangerous for a novice to repair.
This begs the question, can your computer’s broken PSU be repaired? If it can, should you even try to do it? Let’s dive into this article & find out, shall we?
Follow our guide step-by-step to fix Computer not turning on Power Supply.
Can Your Power Supply Be Repaired?
Theoretically, a power supply unit can be repaired, but you need to be a really good electrician with all the necessary gadgets & tools. Otherwise, it is foolish to attempt repairing a broken PSU, even when it is unplugged.
Like most PC components, the power supply unit will die out sooner or later. But, like most PC components, the power supply units aren’t manufactured with repairability in mind. Also, the immense risk of handling an open power supply can scare off many repair technicians.
So to answer the question, in theory, a power supply unit can be repaired. But most repair outlets and companies don’t usually want to repair a faulty PSU due to the potential hazard and cost. It is much safer and cheaper to just offer a replacement.
Also, check out our separate post on what happens if your Power Supply is too weak.
Should You Try to Repair a Broken Power Supply?
Absolutely not. You should never try to repair a broken power supply, especially if you are a novice in computer hardware.
There are dangerous components, such as reservoir capacitors, that can cause serious damage to your body, even death, as these capacitors can remain energized for a long time, even after being completely unplugged from the power source. 
You need to have thorough knowledge and years of experience to attempt any kind of repair to the power supply unit. Additionally, you’ll need the necessary tools and gadgets, which are very expensive, to properly drain the capacitors & repair the faulty parts of the PSU.
Not to mention, 9 out of 10 times when a PSU dies, it dies for good.
Still want to repair your broken PSU yourself? Okay, let me tell you a short story. I had a colleague who tried to repair his computer’s PSU on his own. Since he had some basic knowledge of repairing electric components, he thought he could do it by himself.
As expected, he forgot to drain the capacitors and charged current went through his arm and out his shoulder. He was hospitalized for several weeks & needed physical therapy before he could move his arms. He still hasn’t fully recovered yet, and he still can’t feel much in his arm.
I hope you can understand how fatal it can be to try and repair such dangerous electrical components on your own.
Related guides on how to tell if my PC is low-end or high-end, can I start a PC without a CPU cooler, how often should you upgrade your PC.
Frequently Asked Questions
Why is it not recommended to repair a power supply?
Inexperienced users should never attempt to repair a computer’s power supply unit because some components inside the PSU can hold dangerously high voltage for quite some time, even after being completely unplugged.
When should I replace my power supply unit?
You should replace your computer’s power supply when the manufacturer’s warranty expires. Most PSUs come with a 5-year warranty. So it’s ideal to change the PSU after 5-6 years.
Is it worth repairing a PSU?
No. The potential hazard and cost of repairing a PSU don’t make much sense. So it is recommended to buy a new PSU instead of repairing the existing defective one.
How much does it cost to repair a power supply?
Since you need an expert technician and many vital gadgets to repair a power supply unit, many reputable shops can charge somewhere between 100-150$.
Final Thoughts
The power supply units are no joke. There are capacitors in the PSU that can literally kill you if they aren’t drained properly. Furthermore, it’s a lot easier(and often cheaper) to just buy a new power supply rather than repair it.
Hence, based on my 20 years of PC expertise, I vote for replacing the PSU, not repair.
That’s about it. Hopefully, this article has given you a clear message on this issue. If you have any further questions, feel free to ask them in the comment section below.
Have a nice day!
