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PostPosted: Mon Mar 15, 2021 1:43 pm 
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My trusty EX475 has started randomly powering down in recent weeks. These aren't clean power downs. They are sudden power downs. Homeserver SMART Classic sends me an email on power up with "Unclean Shutdown Detected".

After power down, pressing the power button does nothing. I physically have to unplug the power cable for a few seconds, plug it back in and then I can power up.

The logs show nothing, except when I power up and the system log shows there was an unexpected power down.

Homeserver SMART Classic shows all drives are healthy and the System Status shows all temps and voltages are normal.

The power downs appear to be random. Sometimes it will stay on for an hour, sometimes several hours though typically not more than 24 hours.

Thoughts/ideas on how to trouble shoot are appreciated.

Thank you.

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PostPosted: Tue Mar 16, 2021 12:21 pm 
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Unsurprisingly the problem turned out to be a failing power supply. I swapped out the old PSU for a replacement and after 24 hours everything is still up and running.

:sanjuan:


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PostPosted: Mon Apr 19, 2021 9:31 pm 
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Sorry for a slow reply,

You mentioned the typical shutdown was around 24 hrs. If you haven't solved this already, try checking temps at the 22-23 hour point. If it doesn't shut down keep watching for a spike in temps. That could cause random shut downs as well as a failing PSU.

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PostPosted: Tue Apr 20, 2021 12:40 am 
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Thanks for the reply. It's been a month now and the problem has not returned since replacing the PSU... so I conclude that was the problem.

Kind Regards
Ian


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