Looking for the short circuit. Need assistance!
Looking for the short circuit. Need assistance!
Hi Guys
Today I assembled my new PC and it seems to be functioning okay. I installed Windows 10 because I already had it on a drive, and after getting the Ethernet drivers, I began updating the system. Everything was working smoothly until the Windows update started. At that point, the PC consumed more power and a peculiar noise began. My initial guess was that a wire was touching a fan. This short video captures the flickering sound. At sec. 26 you can hear the fans spinning up, and at sec. 29 you hear the flicker.
https://photos.app.goo.gl/a9Du6dW8TYATApU5A
I recreated the issue several times trying to find the cause, but suddenly two loud "peng" sounds caused my power fuse to cut off. You can listen to it here:
https://photos.app.goo.gl/Zc7DWrN8TcMKuEzg7
Based on what I’ve observed, since the apartment’s power went out, it likely indicates a short circuit. The computer kept running even during that short circuit (even during the first "peng" that didn’t disconnect power), but the short only appears when the PC uses more power. (This might be incorrect, as only strong effects seem noticeable...)
The PC still operates normally. However, I need your help to pinpoint the exact location of the short circuit.
Thanks a lot for your support!
p.s. I have a multimeter that could assist, but I’m not sure where to start testing...
Thanks for looking into this.
This is a piece of cardboard which I placed between the fan and the cpu-cable because I thought, that the cables there would be touching the fan. It is not conductive and obviously as I know now was not the problem so I removed it again.
It was basically just a test to see if my assumption was correct...
so no, the cardboard is not making the noise you hear.
How can I verify your theory about the PSU blowing out powerfuses?
Here are the details of your PC setup:
The specifications include:
MSI MPG B650 EDGE WIFI ATX AM5 Motherboard
AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor
Deepcool LS720 SE WH 85.85CFM Liquid CPU Cooler
G.Skill Ripjaws S5 32 GB (2x16 GB) DDR5-6000 CL30 Memory
Samsung 980 Pro 2 TB M2-2280 SSD
be quiet! Pure Power 12 M (1200 W) Power Supply
NZXT H9 Flow ATX Mid Tower Case
Asus Rog-Strix-RTX4090-024G-White (currently not installed)
Where exactly is your "blowing power fuse" located?
Is it a tiny 20 x 5mm fuse similar to the one shown? These were commonly used in older AT power supplies, though you're unlikely to find one in today's ATX PSUs.
If you're in the UK, could it be a 13A fuse in the mains plug of the IEC cable connected to the back of your computer?
Maybe it's a 30A fuse wire on a ceramic holder inside a mains distribution panel (like the one in my home).
I understand, but it's a current PSU and because the computer boots up fine each time, a blown fuse seems unlikely. Also, opening it would cancel the warranty, so I'm not sure I should try it unless necessary...
Does your computer still blowing out power fuses after removing the 4090 component?
I went to a specialist and found that the ball-bearing in one fan of the AOI Water cooling system was broken, which caused noise and short circuits. Removing that fan fixed the issue... It appears to be a defect at the time of purchase, and the case has been closed.