Need assistance with power supply issues urgently.
Need assistance with power supply issues urgently.
I recently encountered a problem with a new power supply I acquired. Here are my specifications:
ASUS ROG STRIX Z790-A
Intel i7-12700k
Gigabyte GeForce RTX 3050 (I know…
And the suspected cause is the SP750 power supply.
About four days ago, I bought a LiNa Snowl mini case which seemed great but I forgot to verify the PSU requirements. I took my trip to MicroCenter and plugged everything in—mobile motherboard lights came on. When I pressed the power button on the case, nothing happened. I double-checked my RAM, PSU connections, GPU, and everything I had looked at for so long, but nothing worked. I reopened the back panel, turned the switch on again, and pressed the power button; the PSU fan showed slight vibration but no response. I confirmed the wattage needed for my PC and was fine. Then I switched to an older PSU and an EVGA 650W PSU, and everything worked perfectly.
So I’m pretty sure it’s the LiNa PSU. The next day I returned to MicroCenter with a replacement PSU of the same model, but the same issue occurred. After getting back home, I connected everything and the same problem appeared.
Now I’m considering selling the case and requesting a refund for the faulty PSU. I’m confused—I’ve had these parts for three months, but I don’t know what to do anymore. Can you please help?
And yes, all the fan connections on the front panel are fine. Please assist me.
I went around my house checking various outlets but still couldn't find a solution.
I don't have the precise model of EVGA, but would it be modular? Are you connecting cables from your new Lian Li SP750?
The computer operates using an older power supply, and we were discussing two new units, the SP750. Could it be that cables can connect in both directions on the power supply? This has happened before with power supplies. Are you certain all cables are oriented correctly from the power supply to the motherboard? Or should we try building a breadboard and testing it? I’m hesitant to follow that approach since it involves older EVGA components.
Based on the facts, it's almost impossible to say otherwise. When you swapped the initial Lian Li PSU, were you certain you received a different unit? It seems likely you got the same one again as a replacement. The only other option, if it exists, is that this batch of Lian Li PSUs is defective.