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Old 02-16-2013, 05:54 AM   #1
doveman
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Default Strange fault on OCZ StealthXStream 400W

Hi

I'm looking for some assistance diagnosing and fixing an OCZ StealthXStream 400W PSU.

It has a weird fault in that it will power up my Gigabyte MA780G-UD3H/Phenom II X4 720/8GB DDR2 system but with my Biostar TA790GXBE/Athlon II X4 630/8GB DDR3 or Asrock 880GMH board with same components, the PSU and CPU fans spin up but then the PSU shuts down after a couple of seconds. All boards were using onboard graphics and no addon cards.

I've checked inside and there's no bulging/leaking caps or other obviously damaged components so I'm not sure what to test. I've got a digital meter if anyone could advise where to start.
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Old 02-16-2013, 07:19 AM   #2
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http://www.hardwaresecrets.com/artic...nt-Turn-On/547

Seems you have narrowed it down to MB, CPU, Memory.

Follow the tutorial and let us known what happened.
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Old 02-16-2013, 07:44 AM   #3
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Quote:
Originally Posted by Merman View Post
http://www.hardwaresecrets.com/artic...nt-Turn-On/547

Seems you have narrowed it down to MB, CPU, Memory.

Follow the tutorial and let us known what happened.
No, I've narrowed it down to the PSU.
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Old 02-16-2013, 11:57 AM   #4
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I take it that the Biostar and ASRock boards work with another PSU.

If so, it could be related to the PG signal being slower than what those motherboards expect. The Gigabyte may be more tolerant of a slower signal than the other two.

Last edited by c.hegge; 02-16-2013 at 11:59 AM.
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Old 02-16-2013, 05:16 PM   #5
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Yeah, they both work fine with my Antec CP-850.

I'll have a look at the PG signal. I should mention that the OCZ used to work with the Biostar board until it developed this problem, so maybe that helps narrow down where the fault might be.
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