[RndTbl] OT: Soldering help

Daryl F wyatt at prairieturtle.ca
Sat Mar 6 15:28:46 CST 2010

The iron isn't hot enough. The pad is probably conducting the heat away 
too quickly. A hotter iron is in order. Desoldering usually takes a hotter 
iron and some solder wicking material to prevent component damage.

Depending on the board you will require long leads on the part when moved 
the other side of the board because you will likely have to solder 
underneath the part, ie; between it and the board. There may not be 
sufficient pad, on the side the part was originally on, to solder to even 
though the leads will come through there.

If you must solder underneath the part try to put a clip lead on the 
component lead, or something similiar, between the component and the tip 
of your iron.


On Sat, 6 Mar 2010, Kevin McGregor wrote:

> Sorry for the off-topic post, but I hope someone on this list can help me.
> I have a PCIe card which has a capacitor on it which I'd like to remove and
> re-install, but on the other side of the board -- it's in the way of
> something, and if the cap isn't moved, I can't use the board. It's not
> surface-mount, and the leads go right through the board so it should be
> possible. I tried unsoldering it myself, but my soldering iron wasn't hot
> enough... or something. I'm not experienced with soldering. I may have even
> damaged the cap, for all I know, so I may have to get a new one. It's
> cylindrical and appears to be 330pF, 16V. I have pictures, but I'm not sure
> if the Roundtable list allows attachments (I expect not). I can email them
> directly to any interested party.
> If any of you can help, please let me know!
> Thanks,
> Kevin

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