MSI MPG A1000G PCIE5 not working?

davidcorle15b602e5

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Jan 24, 2023
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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 I know the other components are fine.

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?
 
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darkhawk

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I would agree that your PSU is probably dead on arrival.
 

bowpro39

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Just finished a build for a buddy of mine using same PSU with a 4090 MSI Suprim Liquid and MSI X670 Carbon. The only indication I get there is power is the Smart Button and CMOS Button on the IO panel on the back of the MB light up but nothing else happens. I thought I was going crazy, tried reseating cables, checking the case wires, tried different power cables, different wall outlets, all nothing. Very disappointed!
 

teletubby_po

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Same here, the unit I bought is a dead piece of brick.
Tried different cables, power outlets and nothing is working.
:confused:

Take a look at this link, Its started by the same person who started this post here but it seems like alot of people are having the same issue.
😑 https://www.reddit.com/r/MSI_Gaming/comments/10k94ov
hi, do you have another PSU that works on your system?
is it just the fan not spinning, or you can't boot up the system at all?
 

nghi_aqu156302d7

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Mar 11, 2023
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hi, do you have another PSU that works on your system?
is it just the fan not spinning, or you can't boot up the system at all?
Hi,

So apparently what happened was, I used the old 24 pin (14+10Pin to 24 Pin ATX) from the previous power unit (Cougar GEX 850) as I thought they're all the same.

When I changed the 24 pin cable to the one that came with MSI A1000G, power came through and Everything's working now.
Hallelujah 🙌 praise the lord...

I think the GEX 850 cable isn't compatible with A1000G despite looking very identical 🤔
 
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teletubby_po

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Hi,

So apparently what happened was, I used the old 24 pin (14+10Pin to 24 Pin ATX) from the previous power unit (Cougar GEX 850) as I thought they're all the same.

When I changed the 24 pin cable to the one that came with MSI A1000G, power came through and Everything's working now.
Hallelujah 🙌 praise the lord...

I think the GEX 850 cable isn't compatible with A1000G despite looking very identical 🤔
thx for the update! great to hear that it working now 🙌
 
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