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RR94IND

Can anyone help me diagnose the issue with my psu?

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Posted · Original PosterOP

Can anyone help me with diagnosing the issue with my psu?

 

For 10-11months psu worked great with my UPS, but recently started having issues.

Issue started with usb ports resetting for a split second when there is a power fluctuation.

Then after a month it started having issues with the PSU completely shutting down when there is a power cut and ups switched to battery backup mode.

Initially I thought it was a UPS issue so I got a APC BX1100C but that too gave same issue. As Mr Jon Gerow said in a forum that max psu dont have issue with stepped sinewave ups so I think thats not an issue here.


is somehow my psu damaged?

PSU after shutdown didn’t restart immediately, I had to reset the switch on the back to start it.

On mains power it works okay as psu will naturally shutdown in a power cut or a power fluctuation.


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Posted · Original PosterOP

Anyone?


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Ok.  The fact that you have to switch the PSU off and on again is a fact that I missed before.  That means there's a protection kicking in and the PSU is "latching" for safety.

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Posted · Original PosterOP
5 hours ago, jonnyGURU said:

Ok.  The fact that you have to switch the PSU off and on again is a fact that I missed before.  That means there's a protection kicking in and the PSU is "latching" for safety.

So ehat should I do now? RMA the CX and get a beefier unit or just RMA and continue using the CX?

By any chance is the psu underpowered? I used a 1070 from December to May before moving to a 1660s.


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39 minutes ago, RR94IND said:

So ehat should I do now? RMA the CX and get a beefier unit or just RMA and continue using the CX?

By any chance is the psu underpowered? I used a 1070 from December to May before moving to a 1660s.

The 1660 Super draws less power than the 1070.


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Posted · Original PosterOP
2 minutes ago, MrBrightSyde said:

The 1660 Super draws less power than the 1070.

IKR, thats why I got that. Same performance less power hungry.

The issue started one month after getting the 1660s.


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14 hours ago, RR94IND said:

So ehat should I do now? RMA the CX and get a beefier unit or just RMA and continue using the CX?

By any chance is the psu underpowered? I used a 1070 from December to May before moving to a 1660s.

No.  It's not the PSU is underpowered.  The PSU is "sensing" something wrong on the AC side and latching.  Not the DC side.  I wonder if the switch over from mains to battery is causing an inrush (mains power->mains loss->bulk cap drains a bit->battery power kicks in->rush of current trips PWM IC).  

 

If that's the case, the only thing to do is to use a completely different PSU.

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Posted · Original PosterOP
12 hours ago, jonnyGURU said:

No.  It's not the PSU is underpowered.  The PSU is "sensing" something wrong on the AC side and latching.  Not the DC side.  I wonder if the switch over from mains to battery is causing an inrush (mains power->mains loss->bulk cap drains a bit->battery power kicks in->rush of current trips PWM IC).  

 

If that's the case, the only thing to do is to use a completely different PSU.

 I will RMA the corsair and exchange it with the retailer for a beefier unit.


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Posted · Original PosterOP
On 9/17/2020 at 10:55 PM, jonnyGURU said:

No.  It's not the PSU is underpowered.  The PSU is "sensing" something wrong on the AC side and latching.  Not the DC side.  I wonder if the switch over from mains to battery is causing an inrush (mains power->mains loss->bulk cap drains a bit->battery power kicks in->rush of current trips PWM IC).  

 

If that's the case, the only thing to do is to use a completely different PSU.

Installed the new PSU. Seems to work fine with the UPS.


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