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motherboard just sparked and I can smell smoke...

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#1
My computer was doing some annoying thing where it'd repeatedly try and power up (sd card reader lights were blinking on and off) and I removed everything from the mobo and it powered up. So I plugged in all the usb connectors and a small black chip on the mobo, near the usb ports sparked. I plugged it out ASAP but there's a tiny black burn on it

Edit: it still boots, but now there's the niggling in the back of my mind that it could happen again! Should I RMA to be safe?
 
Last edited:

brandonwh64

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#2
My computer was doing some annoying thing where it'd repeatedly try and power up (sd card reader lights were blinking on and off) and I removed everything from the mobo and it powered up. So I plugged in all the usb connectors and a small black chip on the mobo, near the usb ports sparked. I plugged it out ASAP but there's a tiny black burn mark on it. I don't think my pc will boot again... Can I claim it under an RMA?
You plugged this stuff up WHILE it was running? Could have power surged if you had something in the card reader but NO they will not RMA if board is physically damaged
 
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#3
You plugged this stuff up WHILE it was running? Could have power surged if you had something in the card reader but NO they will not RMA if board is physically damaged
Noooo I unplugged the psu cable before plugging everything back in. I have no idea why it happened either, its not like its a chip that had a heatsink that fell off or something
 

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#4
must be a USB fuse or something
 
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#5
If you dont push the start button to empty the PSU and mobos capacitors after disconnecting the PSU cable the mobo still has some current and can spark.
 
Last edited:

dorsetknob

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#6
You plugged this stuff up WHILE it was running? Could have power surged if you had something in the card reader but NO they will not RMA if board is physically damaged
" Yes They Will "

Example
How many motherboards have been RMA'ed because of Leaking / swelling Caps.
or don't you class Leaking / swelling Caps as physically damaged
or
Electrical arc/burn damage in Cpu socket ((intel 1156 motherboards had this problem i believe)

Apply for A RMA what do you have to lose
 
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#7
LOL, same thing happened to me before with gigabyte P45-UD3P same place, but still work great no problem at all.
 
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#8
It's working now, but I'll apply for one anyway :)
 
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#9
My MSI motherboard sparked and something popped. It turned out that my USB controller burnt out and burned up my mouse and keyboard and even portable hd (there was only 1 USB controller on my mobo)
 
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#10
Electrical arc/burn damage in Cpu socket ((intel 1156 motherboards had this problem i believe)
How can a cpu socket at 1.5v max produce an electrical arc?
 

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#11
because it controls more than just the Vcore. I took out like 10-12 pins on my 1156 socket due to the memory used and the voltage I was using for it, not the CPU.
 

dorsetknob

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#12
How can a cpu socket at 1.5v max produce an electrical arc?
If the Electrical contact is to small or Not making good low Resistance Contact The "Load" it Attempts to carry/conduct will overheat and Burn/arc the contacts (resulting in a Damaged Socket "and" CPU

Google the CPU power Draw for Your CPU then look at the contact pad/pin size
Then use Ohm's law to work out the Current consumed By your CPU
Your be surprised at how much "AMPERAGE" your CPU DRAWS thru the Socket

Like 20 to 30+ amps now that can arc/burn

Q answered ?:nutkick:
 
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#13
If you didn't cause the damage. I'd RMA it immediately.. I'd call that a motherboard defect and not your fault. Unless you actually caused it.
 
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#14
I have seen this happen from having internal devices mis-wired. For example I have seen this happen when the internal header for firewire was hooked up to the usb. USB is supplied with 5v, although current is limited, it can still be enough to fry a chip. So it is possible that your card reader or another device is shorting out.
 
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#15
ive had that happen on my MSI 750i chipset. Board was fine tho lol. I shorted it with a backplate.
 
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#16
If the Electrical contact is to small or Not making good low Resistance Contact The "Load" it Attempts to carry/conduct will overheat and Burn/arc the contacts (resulting in a Damaged Socket "and" CPU

Google the CPU power Draw for Your CPU then look at the contact pad/pin size
Then use Ohm's law to work out the Current consumed By your CPU
Your be surprised at how much "AMPERAGE" your CPU DRAWS thru the Socket

Like 20 to 30+ amps now that can arc/burn

Q answered ?:nutkick:
Okay its just the terminology used here. Electric arcs are produced by high voltage while sparks (like when you short out a capacitor) are caused by high current passing through a small conductor, just like you have said

But i think we are getting off topic..:)
 

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#17
It's working now, but I'll apply for one anyway :)
Yes just RMA if you can wait for a new mobo. Never know some thing else might go