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Accidently bent tuf capacitor? - Page 2

post #11 of 18
Quote:
Originally Posted by richie_2010 View Post

At our local asda they sell a lil dentist kit thing. It has the mirror on the long handle that would be good to use. Should find it at ant chemists or store or ebay

this would be a good alternative to taking the motherboard out aswell, granted you have the lighting to actually see under there lol.
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post #12 of 18
Thread Starter 
Actually that might work, thanks guys

I guess I am satisfied it's ok, still why make them so damn close to the mobo when all other manufacters are not? Ugh Do you guys know if the orientation of the legs is vertical or horizontal with the mobo installed?
post #13 of 18
it's good practise for the caps to drop right through the holes when flow soldered..
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post #14 of 18
it depends on the cap - most electrolytics are what we call pin-thru-hole, these have vertical legs which go through holes in the board. You do get surface mount variants though, and these tend to have tabs at either side of the cap. You can usually tell these types, as you'll see solder points on either side of the cap.



Your typical pin thru hole cap.



Your typical surface mount cap.
post #15 of 18
you wouldn't be able to bend a SMT/surface mount over though? so it had to be a TH/through hole..either way you'd feel a lot of resistance before the pin popped out and made the cap dead.
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post #16 of 18
Quote:
Originally Posted by MightyMission View Post

you wouldn't be able to bend a SMT/surface mount over though? so it had to be a TH/through hole..either way you'd feel a lot of resistance before the pin popped out and made the cap dead.

for the most part, this is true, but i have seen cases where the surface mount cap isn't flush with the board, and can rock on its axis of the tabs. Its usually because they haven't seated properly in the solder on the lands, and sit slightly raised. Same could be said for through hole caps - there really no need for them to sit raised. I always try to sit them flush to the board. That only changes if the pin pitch and hole pitch are different, which can happen if a smaller cap is sourced on a production run. Or axial caps too - its kinda hard to sit them flush with a lead at either end! smile.gif
post #17 of 18
Thread Starter 
Using a high powered flashlight I shined around the capacitor with it in the mobo, anyways the things leads are vertical from what I can tell. So answer me this, how could it have moved downward if it's leads are vertically attached? It seems impossible unless the capacitor was warped by me somehow pushing it, idk

Could the top lead have been pulled out more and thus it moved downward? ugh so many questions

I give up worrying but it still makes no sense to me, the bottom lead would almost prevent the thing from moving downward I would think. I examined it with my light and it didn't seem to move at all and the leads seem ok but my mind can make no sense of it
post #18 of 18
well, the leads could have bent, from being like this | | to this ( )

Also, i've seen cases where pressure on a component has lifted the copper pad off the bottom of the board. Though to be fair, this only usually happens of the component is hot, and softened the glue which holds the copper to the board. Its not unknown though.

Really - I think you're worrying over nothing though. The only way to really test it, would be to take a multimeter on the ohms range, and measure across the two leads of the component (this would be done from the bottom of the board). It should read open circuit, but may take a few seconds to do so as the cap gets charged with the meter. And sometimes in circuit, you don't always get clear readings. I usually have to desolder them if they're suspect, But you can catch shorted caps like this.
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