Capacitor Just Come off my Motherboard !!!!

mglover070588 said:
which is why a dont buy from foreigners, i dont buy untested, or when someone says 'i dont know much about this motherboard i selling it for a friend' but has managed to but socket 939 dual core takes 4gb ram etc etc in the title :confused:

I would resolder the capacitor back on, its there for a reason :p
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So all foreigners are bad? :confused:

To the OP, if you have a soldering iron and know how to use it then solder it back in place. You don't have to worry about the multi-layer aspect as it will only connect to the layers it was designed for. Have a look at another cap on the board to establish which way round it goes in terms of the positive and negative legs on the cap.
 
It's a smoothing capacitor, your motherboard will function ok for the most part without it. A large capacitor like this is normally used for pre regulation filtering, to smooth out ripple on the power line. Longer term, excessive ripple causes strain on the regulation circuitry as it has to work harder to provide the power/low impedance at the noise related frequency. However pc products are seldom used long enough for the failure to surface.

Capacitors you don't want to knock off are those used for compensation in feedback networks, they are small smt types usually in the pico farad region, there are many smt capacitors on motherboards and graphics cards, though few of them are absolutley critical for operation, most provide high frequency filtering to scotch rfi/emi or switching noise.

Based upon your pictures, if you wish to replace the capacitor replace the capacitor with a new one of equivalent voltage and micro farads. Or if unsure leave as is. BTW reason I suggest using a new capcaitor instead of the old is if you have pulled on the terminals, there is a chance they have shorted and will cause component damage upon reuse, better to be safe..

Not all damage to capacitors is always a catastrophe.

regards
raja
 
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raja said:
It's a smoothing capacitor, your motherboard will function ok for the most part without it. A large capacitor like this is normally used for pre regulation filtering, to smooth out ripple on the power line. Longer term, excessive ripple causes strain on the regulation circuitry as it has to work harder to provide the power/low impedance at the noise related frequency. However with pc's products are seldom used long enough for the failure to surface.

Capacitors you don't want to knock off are those used for compensation in feedback networks, they are small smt types usually in the pico farad region, there are many smt capacitors on motherboards and graphics cards, though few of them are absolutley critical for operation, most provide high frequency filtering to scotch rfi/emi or switching noise.

Based upon your pictures, if you wish to replace the capacitor replace the capacitor with a new one of equivalent voltage and micro farads. Or if unsure leave as is. BTW reason I suggest using a new capcaitor instead of the old is if you have pulled on the terminals, there is a chance they have shorted and will cause component damage upon reuse, better to be safe..

Not all damage to capacitors is always a catastrophe.

regards
raja
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Wow, ill sleep tonight after reading that very interesting post. Thank you for your assistance

Lee
 
Cob said:
What's your vcore set to in BIOS?

The others are grand.
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From my bios ..... ( p.s ive never overlcocked anyhting before, but would like to know more about it )

overclock profile-------------auto
overclock options------------disabled
n.o.s option-----------------disabled
cpu frequency---------------200.0
pci express clock------------100mhz
ddr voltage------------------auto
chipset voltage--------------1.5v
ht voltage-------------------1.20v
cpu multiplier----------------auto
cpu voltage-----------------auto
pci clock sync mode---------auto
 
raja said:
It's a smoothing capacitor, your motherboard will function ok for the most part without it. A large capacitor like this is normally used for pre regulation filtering, to smooth out ripple on the power line. Longer term, excessive ripple causes strain on the regulation circuitry as it has to work harder to provide the power/low impedance at the noise related frequency. However pc products are seldom used long enough for the failure to surface.

Capacitors you don't want to knock off are those used for compensation in feedback networks, they are small smt types usually in the pico farad region, there are many smt capacitors on motherboards and graphics cards, though few of them are absolutley critical for operation, most provide high frequency filtering to scotch rfi/emi or switching noise.

Based upon your pictures, if you wish to replace the capacitor replace the capacitor with a new one of equivalent voltage and micro farads. Or if unsure leave as is. BTW reason I suggest using a new capcaitor instead of the old is if you have pulled on the terminals, there is a chance they have shorted and will cause component damage upon reuse, better to be safe..

Not all damage to capacitors is always a catastrophe.

regards
raja
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And what's your opinion on leaking capacitors ???????????
 
Capacitors are pretty hardy components, just solder it back on making sure you get the polarity right (it can burst/explode if the polarity is reversed).

Sounds like it wasn't flow-soldered very well if it pulled out that easily tbh, it should be near-on impossible to pull it out if soldered properly. The legs would pull out of the cap before the solder breaks.
 
Always the chance when someone inexperienced is using electronic components that there is more damage than is seen to the eye, if the leads have been tugged on enough to cause a short etc within the capacitor. Just in case I would suggest acquiring a brand new cap of equivalent value and using that instead. 99.9% of the time the capacitor is ok and can be remounted, but I never take chances on somebody inexperienced, the safest option is usually the soundest advice on can give, at a couple of quid max a new cap is not going to break the bank..


Any short in this situation can blow pre-regulation circuitry, especially if the devices in question have no over current protection. Many 8 pin regulators do have on board protection, however I have seen on board regulators dying from short circuits all too often..


regards
Raja
 
M0t0r0la said:
{snip}Sounds like it wasn't flow-soldered very well if it pulled out that easily tbh, it should be near-on impossible to pull it out if soldered properly. The legs would pull out of the cap before the solder breaks.
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Versus a 2kg+ PSU?
leedrummond said:
I was installing a new 600w PSU and it slipped and knockd off a capacitor{snip}
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ohhh i have an update


the mcb on the socket ring in the house trips each time i fire up my pc

at first i ashumed this was due to the extra load of my new 600w psu that i put in

but could this be the cause of this broken off capacitor ? ? ?
 
Make sure you take your time. Dont rush. Heat up both parts that you want to solder. Maybe do some practice runs first if you havnt soldered before. You want to make a nice conical shaped solder, not a blob.
 
Its back on

Made a nice neat job of it too. Pc still works and voltages are same as before

owever this wasnt the cause of the 16a MCB tripping on the socket ring in the house, each time i fired up all the pcs in the house
doh
 
Had it been the cause of the mcb tripping, you would have had plenty of local evidence......................

However, you should investigate what is causing that fault

I always thought ring power circuits were 20A but I am propably out of date

Got a smoke alarm ?
 
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