Question Seasonic M12 Bronze 620 Watt bad? Thoughts

[justatrucker56]

I have had this power supply for about 10yrs.. Lately out of know where while on the computer it would randomly just just down. No warning, no error messages no nothing.. Today it just would shut down each time I powered up to the desktop. Either Win11 or Linux Mint. Now I can get to the bios no issues and look at mb, cpu temps and everything is fine. But once I try to power back to the desktop it would just shut down.. I assume it is the power supply doing this to protect the rest of the computer. What are you thoughts? My multi meter is dead, so I can't test just figure the way it is acting most likely the power supply itself.

 

[In2Photos]

Are Windows and Linux on the same drive or different drives? Try running Linux from a flash drive and see if it will run. Let's rule out a drive failing since you can get into the BIOS. Also, try replacing the CMOS battery if it hasn't been replaced in a while.

 

[justatrucker56]

Windows and Linux are on separate disk.. CMOS has been changed in the last year or so.

 

[In2Photos]

Windows and Linux are on separate disk.. CMOS has been changed in the last year or so.

Are these disks NVME or SATA? Did you try Linux on a flash drive?

 

[bigboxes]

I have had this power supply for about 10yrs.. Lately out of know where while on the computer it would randomly just just down. No warning, no error messages no nothing.. Today it just would shut down each time I powered up to the desktop. Either Win11 or Linux Mint. Now I can get to the bios no issues and look at mb, cpu temps and everything is fine. But once I try to power back to the desktop it would just shut down.. I assume it is the power supply doing this to protect the rest of the computer. What are you thoughts? My multi meter is dead, so I can't test just figure the way it is acting most likely the power supply itself.

Have you tried swapping out the power supply? 10 years is a long time to use a PSU. Yes, power supplies may last more than 10 years. But you have this value line PSU that has a 5-year warranty. I believe I had maybe three M12 units that almost all died around the end of the warranty (5-years). You got your moneys worth.

 

[BonzaiDuck]

Have you tried swapping out the power supply? 10 years is a long time to use a PSU. Yes, power supplies may last more than 10 years. But you have this value line PSU that has a 5-year warranty. I believe I had maybe three M12 units that almost all died around the end of the warranty (5-years). You got your moneys worth.

I'll second that observation. It has been long established that the warranty period for a particular make and model PSU is indicative of what you're getting for the money. If you can afford a 10 or 12 year warranty, then you should buy a PSU with the highest warranty period.

Another "old" criterion: "Does it feel heavy?"

Can I solicit insights and recommendations? I discovered this Seasonic "New" for $125:

Seasonic FOCUS PX-750 | 750W | 80+ Platinum | Full Modular | ATX Form Factor | Low Noise | Premium Japanese Capacitor | 10 Year Warranty | Nvidia RTX 30/40 Super & AMD GPU Compatible (Ref. SSR-750PX) ​

After shipping and tax, more like $150.

 

[In2Photos]

I'll second that observation. It has been long established that the warranty period for a particular make and model PSU is indicative of what you're getting for the money. If you can afford a 10 or 12 year warranty, then you should buy a PSU with the highest warranty period.

Another "old" criterion: "Does it feel heavy?"

Can I solicit insights and recommendations? I discovered this Seasonic "New" for $125:

Seasonic FOCUS PX-750 | 750W | 80+ Platinum | Full Modular | ATX Form Factor | Low Noise | Premium Japanese Capacitor | 10 Year Warranty | Nvidia RTX 30/40 Super & AMD GPU Compatible (Ref. SSR-750PX)​

Check the PSU Tier list: https://docs.google.com/spreadsheet...Gkz8zTEvYfLDcaSpZRB6Xt6JWkc/edit?usp=drivesdk

The PX-750 is Tier A.

 

[justatrucker56]

Are these disks NVME or SATA? Did you try Linux on a flash drive?

They are SATA. My NVME from Samsung died just after 2 years of use.

 

[justatrucker56]

Have you tried swapping out the power supply? 10 years is a long time to use a PSU. Yes, power supplies may last more than 10 years. But you have this value line PSU that has a 5-year warranty. I believe I had maybe three M12 units that almost all died around the end of the warranty (5-years). You got your moneys worth.

I did not have any spares.. I got rid of a lot of my extra pc parts years ago, because they were just taking up to much space... 10 years is long and I'm glade it lasted that long.. It was recommend to me from the old pcmech.com forum that no longer exist. Right now, I have my 32 inch monitor, mouse, and speaker system connected to my laptop.

 

[In2Photos]

They are SATA. My NVME from Samsung died just after 2 years of use.

With SATA drives check your cables, try new cables, try different ports. If none of these things help see if you can find someone local to borrow a test PSU.