Very high power supply noise, possibly coil whine, and a loud part in the circuit.
Very high power supply noise, possibly coil whine, and a loud part in the circuit.
I'm facing a comparable issue too, the fan in my machine is making noise. It could be something hitting inside or the fan might be defective. Without a spare power supply unit I can't return it for repair. I don't suggest trying to fix it yourself because it would involve opening the PSU, which contains capacitors that store a lot of electricity and could be dangerous.
This situation resembles a wire striking a fan—issues that are generally straightforward to resolve, yet opening power supplies can pose serious risks. The main concern lies in the massive capacitors, which can cause fatal shocks if a short circuit forms through your body. It’s best not to try this; I’ll now explain how it could be attempted, even though it’s not advisable. To protect the capacitors, draining them is essential before opening the case. This usually takes time. I managed it by unplugging one PSU and letting it sit for a month to naturally discharge. You might accelerate the process by placing the PSU in an unplugged machine and trying to power it on again without connecting it. Of course, this won’t guarantee success, but it could help the capacitors drain faster. Either way, first drain the capacitors using the no-plug method, then wait a while. The natural discharge might finish within about fifteen minutes, though that’s uncertain. That’s why I left it for a month. Once the capacitors are safely drained, simply unscrew the case and check for a wire touching the fan. Secure it with appropriate tape—choose a durable, heat-resistant material since replacement will likely be needed again. This approach requires careful selection of tape to ensure longevity.
IGPs typically consume much less power than dGPs, making a more affordable, lower-wattage PSU a viable choice during replacement. Removing any overclocks can further reduce demands on the temporary setup. This adjustment won’t eliminate performance entirely—gaming might suffer—but web browsing and video calls should remain functional. The main limitation comes from 3D rendering capabilities.
The wire striking the fan causes unexpected changes in speed and noise. It often happens suddenly without any prior buildup, and seems random.
That would still need purchasing a power supply unit, and I don’t want to jeopardize the rest of my components by opting for a very inexpensive Chinese one.
They seem to be from China or similar low-cost options. You can find cheap big ones as well. If you only need it for a short period, a budget power supply is safer. Not ideal, but better than nothing. The issue arises when PSUs wear out and near the end of their life. Cheap ones degrade faster and more abruptly. Power issues will persist, and it won’t really help your equipment. Even a low-end unit is unlikely to fail soon, though it’s not something you’d want to rely on often. I wouldn’t use it regularly. There might be a chance to buy it back if needed. It’s questionable but possible.