Need help with MSI MPG A1000G PCIE5

[heavydawson]

I recently purchased a new MPG A1000G PCIE5 for my desktop to use with my 4090 FE. After removing my old supply, I dropped in the MPG and started setting it up.

The mobo, cpu, sata, gpu and pcie supplies were connected but when I tried to turn on the PC, nothing happened. The switch on the PSU itself was set to on, and the zero fan button was _not_ engaged.

I started disconnecting my components one-by-one until only the Mobo power was connected, but still nothing. The fan in the PSU never moved.

At this stage I disconnected the PSU from the mobo, and used a paperclip in the PS-ON and one of the Ground pins in the Mobo connector. I can hear the PSU click, but the fan never comes on. This is the same behaviour with the zero fan button engaged or disengaged. I put the old power supply back in and the PC booted normally, so pretty sure it's not something else causing the issue.

At this stage I believe my new PSU is dead-on-arrival.

However, I just wanted to confirm that with newer MSI power supplies, connecting the PS-ON pin to a ground pin should spin up the fan?

 

[Nebulous]

If using the paper-clip trick to power on the PSU and nothing happens, then it's a sure sign the new PSU could be defective. It's not unheard of new parts arrive DOA.

How about retuning it for an exchange?

 

[EarthDog]

Not sure if the fan turns on for that model... I th8nk they all spin up at power on??? But wouldn't bet on it.

 

[DaddyD302]

I had that psu for 3 weeks and honestly I never paid attention to the fan on it. I have no idea when the fan is on and off since my system fans are louder.