one component fell off from the mobo...

[trx]

hello.

I had this stupid little accident with my mobo (MSI 694D Master, VIA 694X based dual Socket 370):

during mounting in case, I've pushed DVD ROM in it's place and it hit one little component on my board. component fell off of the board.

I don't know what kind of electrical component it is, so I've marked it on pics below:

picture 1
picture 2 (zoom)

can someone indentify what kind of component is that?

board works well without it, but I feel unsafe.
I've run two instances of prime95 for hours (I have two CPUs) without an error.

is it posible that that specific electrical component is not so important to the motherboard?
I don't know if the mobo will work stable for good or am I sitting on the ticking bomb...

 

[jackschmittusa]

Hard to see, but looks like a small capacitor.

There is no way to tell what the circuit function is that the part belongs to.

 

[trx]

here's two pics of that particular electrical component:

closeup 1
closeup 2

I'll try to solder it back - there's no chance to get board like this one these days...

 

[imported_Truenofan]

just use a low wattage soldering iron if your going to do that, otherwise you run the chance of frying some more important stuff, 25w or so will do the trick.

 

[GalvanizedYankee]

That capacitor serves the (?)logic chip nearest it, whatever that chip does will be effected.
Read the soldering / recapping section over at badcaps.net.
DO NOT try to reuse that cap, buy a new one.

 

[Mark R]

It's probably just a decoupling cap - used to help stabilise the power to a nearby chip.

If the system works fine without it, I'd just leave it off. It's there to make the system more reliable and less sensitive to power fluctuations. You may find, that in your particular setup, the power is sufficiently clean that things work fine. Remember, these things are designed for worst-case situations, so there is often a bit of a safety margin.

Only if it doesn't work properly, or is unstable, would I bother trying to resolder it - modern tightly packed, multi-layer circuit boards are easily damaged by poor soldering. I'd do this only as a last resort.

 

[boomerang]

And there are polarity issues. It will solder on one of two ways, only one of which is correct.

 

[trx]

I've took it to professionals and thay solder it. it looks like this and it have run 20 hours of memtest86+ without problem (it's near DIMM slots):

http://titan.blok44.net/temp/msi-05.jpg
http://titan.blok44.net/temp/msi-06.jpg

 

[GalvanizedYankee]

Originally posted by: trx
I've took it to professionals and thay solder it. it looks like this and it have run 20 hours of memtest86+ without problem (it's near DIMM slots):

http://titan.blok44.net/temp/msi-05.jpg
http://titan.blok44.net/temp/msi-06.jpg

If they did not charge too much, you're happy and the board runs well, that's all that counts.




BUT, that is NOT a professional repair job. In my post above this one I stated, "DO NOT reuse the old cap, buy a new one." *WHY*? Because caps are rated for about 10 seconds of 250oC solder time. That's why.
Plus, by using extension wires the ESR has been raised and motherboard caps must be low ESR. Scroll down and read http://xtronics.com/reference/esr.htm
If you had come back into your own thread for further input, I would have linked articles from http://www.badcaps.net/
Now if MarkR, whose EE knowledge I happen to respect, comes back at me saying I'm full of poop. I will request that the OP post these repair pics over at badcaps for their input.