F5F Stay Refreshed Hardware Desktop I tested three distinct PSUs but my old one remains functional.

I tested three distinct PSUs but my old one remains functional.

I tested three distinct PSUs but my old one remains functional.

V
Vortavor
Junior Member
44
03-26-2022, 07:57 AM
#1
I have purchased a new setup: RTX 5090, AMD Ryzen 7 9800X3D, B650, gaming components, and a Thermaltake PSU. I switched from a new PSU to an older one but the PC still wouldn’t start properly. After trying different PSUs, I replaced it with a SuperFlow Leadex v11 Pro. Now it only powers up briefly before shutting off completely. No debug lights or fan noise are present. I’ve checked cables, connections, and even removed the battery to rule out BIOS issues. Only recently connected RAM sticks. Please advise what should be done next.
V
Vortavor
03-26-2022, 07:57 AM #1

I have purchased a new setup: RTX 5090, AMD Ryzen 7 9800X3D, B650, gaming components, and a Thermaltake PSU. I switched from a new PSU to an older one but the PC still wouldn’t start properly. After trying different PSUs, I replaced it with a SuperFlow Leadex v11 Pro. Now it only powers up briefly before shutting off completely. No debug lights or fan noise are present. I’ve checked cables, connections, and even removed the battery to rule out BIOS issues. Only recently connected RAM sticks. Please advise what should be done next.

H
HoundLynx
Member
233
03-26-2022, 03:37 PM
#2
Yes, you confirmed not to combine cables from different PSUs in the same setup. You also verified that all cables were changed when switching PSUs.
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HoundLynx
03-26-2022, 03:37 PM #2

Yes, you confirmed not to combine cables from different PSUs in the same setup. You also verified that all cables were changed when switching PSUs.

I
iStrafeRunner
Member
169
03-26-2022, 04:36 PM
#3
I completely replaced them, but I tried initially after the first new PSU failed to connect the new cables to the old one to check if the issue was with the cable or the PSU itself. It seemed to work fine with the old PSU, so I assumed the problem was with the new ones. However, after three new PSUs, I don’t think they’re defective, which makes me wonder what’s actually wrong and why it doesn’t seem to be a hardware failure.
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iStrafeRunner
03-26-2022, 04:36 PM #3

I completely replaced them, but I tried initially after the first new PSU failed to connect the new cables to the old one to check if the issue was with the cable or the PSU itself. It seemed to work fine with the old PSU, so I assumed the problem was with the new ones. However, after three new PSUs, I don’t think they’re defective, which makes me wonder what’s actually wrong and why it doesn’t seem to be a hardware failure.

M
MeuPauDeChapeu
Junior Member
6
03-26-2022, 09:00 PM
#4
You probably damaged your device by touching the wrong wires. The cables come from various OEMs with different pin configurations, so they aren't interchangeable. Based on my research, Strix parts are made by Seasonic and the Thermaltake GF3 model uses CWT connectors.
M
MeuPauDeChapeu
03-26-2022, 09:00 PM #4

You probably damaged your device by touching the wrong wires. The cables come from various OEMs with different pin configurations, so they aren't interchangeable. Based on my research, Strix parts are made by Seasonic and the Thermaltake GF3 model uses CWT connectors.

Q
Quinq
Junior Member
15
03-26-2022, 09:38 PM
#5
Nevertheless, the problem existed prior to connecting the cables, because I initially employed the updated cables alongside the new power supply, and the looping persisted. Additionally, the PC remains functional using the previous power source.
Q
Quinq
03-26-2022, 09:38 PM #5

Nevertheless, the problem existed prior to connecting the cables, because I initially employed the updated cables alongside the new power supply, and the looping persisted. Additionally, the PC remains functional using the previous power source.

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Cardboard_Box1
Junior Member
5
04-03-2022, 11:30 AM
#6
It's a strange thought but why switch if it functions well with the older power supply? I'm not really into letting the old one disappear (the classic working PSU). It seems like a change just for the sake of it.
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Cardboard_Box1
04-03-2022, 11:30 AM #6

It's a strange thought but why switch if it functions well with the older power supply? I'm not really into letting the old one disappear (the classic working PSU). It seems like a change just for the sake of it.

Z
ZenDyy
Junior Member
47
04-03-2022, 07:58 PM
#7
I thought about switching because the previous power supply is an ATX 3.0, while the ATX 3.1 offers improved safety for my 5090 from the cable overheating issue. Since I upgraded from a 5080 and have coil whine on my 5090, it might lessen with a new PSU.
Z
ZenDyy
04-03-2022, 07:58 PM #7

I thought about switching because the previous power supply is an ATX 3.0, while the ATX 3.1 offers improved safety for my 5090 from the cable overheating issue. Since I upgraded from a 5080 and have coil whine on my 5090, it might lessen with a new PSU.

D
Donix9000
Member
54
04-04-2022, 04:28 AM
#8
Need assistance still?
D
Donix9000
04-04-2022, 04:28 AM #8

Need assistance still?

A
Avantaage
Junior Member
16
04-04-2022, 06:00 AM
#9
I checked up on this and it’s confusing. The older PSU seems less responsive to bad parts compared to the newer models. Possibly there’s an issue with the motherboard or other system components that newer PSUs are struggling with. Start by disconnecting everything, including the GPU, if you have built-in graphics. Test with just the CPU and memory card only. If nothing works, try adding parts one by one until you find the problem. If you’re lucky, it might fix itself once you set everything up again. Apologies if this left you confused!
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Avantaage
04-04-2022, 06:00 AM #9

I checked up on this and it’s confusing. The older PSU seems less responsive to bad parts compared to the newer models. Possibly there’s an issue with the motherboard or other system components that newer PSUs are struggling with. Start by disconnecting everything, including the GPU, if you have built-in graphics. Test with just the CPU and memory card only. If nothing works, try adding parts one by one until you find the problem. If you’re lucky, it might fix itself once you set everything up again. Apologies if this left you confused!