Motherboard Failed Twice ??

Joey Minnock · Mar 8, 2015

Well lads,
I bought an MSI Z97 PC Mate motherboard about 2 months back and when I got it it was defective on arrival (Wouldn't boot at all, no leds or anything), then i sent it back and got a replacement I believe (not 100% sure, it could have been repaired)
The replacement was working fine for 3 weeks until one morning I go to turn on my PC and it would not boot at all (same problem as before), I also noticed a small bit of smoke coming from the motherboard,
Any idea what could be causing this , was it just unlucky or could it have been a power surge or something ?
Thank you very much,
Joey

Ra_V_en · Mar 8, 2015

Both options are valid, what kind of PSU are you using? Did you actually see where did the smoke came from, maybe some part didn't sit properly and made that disaster. Its not the ages of Slot 1 cpu's where you could actually burn mobo and CPU simply by being to gentle but some reasons are still valid

PizzaTheHutt · Mar 8, 2015

I would suspect the PSU. Did you mount the motherboard with standoffs too?

Joey Minnock · Mar 8, 2015

I am using an FSP 600 Watt power supply 80 plus bronze and ths smoke was coming from right below what I believe is a DDR3 Graphics card slot and is about an inch to the right of a capacitor
, that slot isn't in use by the way, I have a ddr5 card
Thanks

Ra_V_en · Mar 8, 2015

Mobo foto
Are you able to mark the area on the photo and send the screen somehow?
If its some kind of stabilizer chip or cap then it might point to PSU which might have some overvolting spikes.
Not sure if there is any decent test to distinguish the issue for good, for PSU you would need an oscilloscope but for that you need a professional service.

Also standoffs question is good also, this might be some kind of PSU-case-mobo short circuit.

sizzling · Mar 8, 2015

I'm no expert with FSP, all I know is they makes some awful PSU's and so ok PSU's, I suggest listing the exact model. If you have one of there awful ones I would suspect that's the killer of your motherboards.

Joey Minnock · Mar 8, 2015

I mounted the motherboard with plastic screws that came with my case, the board sat properly but could the plastic screws have caused a problem ?

Joey Minnock · Mar 8, 2015

Here is a link to the exact model of power supply : http://www.komplett.ie/product/zkb-01com/80005674/fortron-source-fsp600-80bpn-85-600-watt/details.aspx

Ra_V_en · Mar 8, 2015

Unlikely if everything is set properly. Its really a mobo or PSU under suspicions but as said before im not sure you gonna solve this without either getting both RMA'ed, new or tested by proper service.

Joey Minnock · Mar 8, 2015

Yea, I'm gonna get it RMA'D

sizzling · Mar 8, 2015

That PSU only has 18A on the 12v, a good 600w should have 38A plus, that tells me thats an awful PSU that probably cant handle your system, voltage fluctuations could easily kill mobo's

Ra_V_en · Mar 8, 2015

sizzling :

The specs on the site he provided is misleading, it actually has 2x18A rails which would make it 36A total. Its indeed not common nowadays anymore but it's still not a reason for it to burn the mobo. It seems to have OCP, OVP and SCP, so such situation shouldn't even happen.
I'm not gonna bust a model based on a single event, accidents simply happen.

What exact config is powered with this PSU?

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Motherboard Failed Twice ??

Joey Minnock

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PizzaTheHutt

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Joey Minnock

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Ra_V_en

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sizzling

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Joey Minnock

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Joey Minnock

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Ra_V_en

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Joey Minnock

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sizzling

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Ra_V_en

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