Question Troubleshooting - smoke in PC

[Gwalthor]

Smoke in New PC

Hi everyone,

I'm a relatively inexperienced PC builder. I've built a few over the years but I screwed up this time and I don't know how to proceed.

Basically, I couldn't figure out why my chassis fans weren't working when plugged into the motherboard. So I looked online and read that the fan control for my Phantek case needed to be plugged into the PSU as well. That's what I did, and my fans started running immediately. Unfortunately, the cable connecting my fan control to the motherboard also started smoking and burning up! Some of the cable coating went through the CPU fans and out the back of my case.

So, what do I do? Is it safe to plug in my PC again without the cable? Should I ditch fan control and use fan splitters? Anything I haven't thought of because of my inexperience? I've attached pictures. Help and thanks!

Here are my specs:

Case: Phantek P600S
Motherboard: ASUS ROG Strix 870e-e
Processor: Ryzen 7 9800x3D
SSD: Samsung 990 Pro PCI 4.0 4TB
RAM: Corsair Vengeance 32GB RGB DDR5 6000MHz
GPU: MSI RTX 5080 Shadow
PSU: MSI MAG A1000GS

 

[Lutfij]

I noticed that you have a 3pin DC fan on the white fan header on the hub. What fan is hooked up to it? I would've wired the hub to the CPU_OPT header on the motherboard, instead of CHA_FAN5.

As for the wiring part;
https://www.phanteks.com/manuals/Eclipse_P600s_Manual_v1.2.pdf
page 14, the 4pin goes tot eh motherboard while the pin wire lead leading off of the hub goes to the PSU's end. So it looks like you've wired it correctly though seeing how the wire's insulation has melted away, would indicate that the end on your motherboard might've been wired the wrong way unless the wiring on the harness leading to the PWM hub was wired the wrong way from the factory.

The 3rd pic in your initial post, was the wire going to the hub bent from the get go or was that bent after managing cables?

I'd contact Phanteks support and see what they say. If you don't see anything melted, burnt, blown or damaged on the PWM hub, you might be good to get another harness/wire from Phanteks for the hub.

 

[Gwalthor]

I noticed that you have a 3pin DC fan on the white fan header on the hub. What fan is hooked up to it? I would've wired the hub to the CPU_OPT header on the motherboard, instead of CHA_FAN5.

Okay. I'll fix that. Thank you!

As for the wiring part;
https://www.phanteks.com/manuals/Eclipse_P600s_Manual_v1.2.pdf
page 14, the 4pin goes tot eh motherboard while the pin wire lead leading off of the hub goes to the PSU's end. So it looks like you've wired it correctly though seeing how the wire's insulation has melted away, would indicate that the end on your motherboard might've been wired the wrong way unless the wiring on the harness leading to the PWM hub was wired the wrong way from the factory.

The 3rd pic in your initial post, was the wire going to the hub bent from the get go or was that bent after managing cables?

This is actually my second build with this case, so it seems more likely that the mistake was on my end rather than the factory's. I don't remember if it's easy to force the wire onto the motherboard the wrong way though. I'll check when I get home.

For the third pic: it was bent from the get go.

I'd contact Phanteks support and see what they say. If you don't see anything melted, burnt, blown or damaged on the PWM hub, you might be good to get another harness/wire from Phanteks for the hub.

Good advice. I will do that. Thank you