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Author Topic: Random shut-downs. Dying PSU?  (Read 2699 times)
Pipesnake
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September 26, 2011, 12:44:09 AM
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So my main miner has been randomly shutting down.  No warning, no errors, just goes down.  Like the cord was pulled.  Am thinking the PSU may be going bad but am curious about other possible causes.  Has anyone else had this problem?

If so what was the solution?
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deslok
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September 26, 2011, 12:46:16 AM
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Could be that, Could be overheating. what card(s) do you have with what PSU? is it in a case? what temperatures/fanspeeds do you have

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deslok
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September 26, 2011, 12:56:42 AM
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Then the most likely cause is a failed psu with no overheating, you can do a visual inspection of the motherboard and cards to see if something has gone wrong by looking for blown caps and discolored pcb's if you're not affriad of opening it you can do the same on the psu, if you have a load tester that would be a good way to check the psu if not they're fairly expensive and buying a properly sized psu is cheaper and returnable if that dosen't solve your issue.

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fivebells
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September 26, 2011, 12:58:33 AM
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It would be worth tracking the temperatures to verify that it's not overheating.  The fact that you have been using it for months does not necessarily imply that heat is not the issue.
mike678
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September 26, 2011, 01:05:02 AM
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if you're not affriad of opening it you can do the same on the psu,

Cant you still get electrocuted even when the powers unplugged if you don't know what your doing? I wouldn't trust myself messing with the power supply.
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September 26, 2011, 01:15:27 AM
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if you're not affriad of opening it you can do the same on the psu,

Cant you still get electrocuted even when the powers unplugged if you don't know what your doing? I wouldn't trust myself messing with the power supply.

Yes you can, i'm comfortable working with things of that nature but not everyone is which is why "if you're not afraid"(corrected for spelling) the big thing to avoid is crossing any of the contacts of the coils or the capacitors they're what hold the residual charge, however if you unpulg your pc you SHOULD(no promises) be able to discharge that by holding down the power button for 30 seconds

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DeathAndTaxes
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September 26, 2011, 09:18:23 PM
 #7

How are you sure it isn't overheating?

Most motherboards & powersupplies have thermal protection.  Either one can cut power without warning if they get too hot.
Unless you are tracking temps you can't be sure it isn't overheating.

It is likely (most likely to least likely)
a) overheating
b) faulty powersupply
c) damaged components (the suggestion above to visual inspect motherboard and powersupply for blown components is a good one). 

To help you know what to look for:

Leaking cap


Bulging cap


Blown cap

deslok
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September 26, 2011, 09:24:44 PM
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You skiped discolored PCB (when i lost a 5770 after our lovely hurricane  it was a dead giveaway) looks something like this

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Bitcraft
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September 26, 2011, 10:47:12 PM
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Awesome thanks for the suggestions guys!!  Will throw some bitcents your way tonight.

Unfortunately my miners are remote so I can't check until this weekend.  Will let you know what I find.

Good luck, let us know what you find :p
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