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 PSU ATX12/24 Connector Burned (+3.3VDC), What is the cause of this?

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TSJeremy_John
post Oct 29 2013, 01:41 PM, updated 11y ago

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Hi, Any Guru know what is the cause of the two +3.3VDC pins to be burned?

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This post has been edited by Jeremy_John: Oct 29 2013, 01:42 PM
meons
post Oct 29 2013, 02:21 PM

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QUOTE(Jeremy_John @ Oct 29 2013, 01:41 PM)
Hi, Any Guru know what is the cause of the two +3.3VDC pins to be burned?

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*
bad 12v rail psu... sad.gif sad.gif

This post has been edited by meons: Oct 29 2013, 02:21 PM
mrbob
post Oct 29 2013, 05:27 PM

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Surge of power thru PSU?
lex
post Oct 29 2013, 06:20 PM

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QUOTE(Jeremy_John @ Oct 29 2013, 01:41 PM)
Hi, Any Guru know what is the cause of the two +3.3VDC pins to be burned?
» Click to show Spoiler - click again to hide... «
*
Possibly due to the PSU (bad rails), bad pin contact at the ATX power connector and also possibly the motherboard. From those pictures, are those capacitors next to the ATX power connectors bulging? hmm.gif

TSJeremy_John
post Oct 29 2013, 08:32 PM

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QUOTE(lex @ Oct 29 2013, 06:20 PM)
Possibly due to the PSU (bad rails), bad pin contact at the ATX power connector and also possibly the motherboard. From those pictures, are those capacitors next to the ATX power connectors bulging?  hmm.gif
*
No, they are not bulging.

*UPDATE (SOLVE):*
Just replace it with a new 500watt PSU unit and it works perfectly now. I think i know what the problem was it seems the old PSU is a very old model where the sata connector has 5 cable and not 4, the extra 1 is the 3.3v orange cable and the PSU is only 230watt. From what i read online it said now days new HDD if they need the 3.3v it can produce it from the dc/ac change something like that so maybe the Old PSU already supplying the 3.3v and the new hdd producing 3.3v also made it short and burn that two 3.3v pins? hmm.gif Correct me if i'm wrong. blink.gif

This post has been edited by Jeremy_John: Oct 29 2013, 08:32 PM
netmatrix
post Oct 29 2013, 10:14 PM

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230W cannot power most of the modern stuff nowdays. Which requires at least 300W. Can see most branded machines go for 350W just to be safe.
h@ksam
post Oct 29 2013, 10:31 PM

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be careful on selection of PSU



 

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