--- On Mon, 8/31/09, Clark Martin <[email protected]> wrote:
> From: Clark Martin <[email protected]>
> Subject: Re: Mac Portable Problems
> To: [email protected]
> Date: Monday, August 31, 2009, 12:04 AM
>
> platnicat wrote:
> > Thanks! Any advice on capacitor replacement?
>
> Be careful. Specifically, when removing parts it's
> not uncommon to peal
> up traces on the circuit board. People often
> recommend using a small /
> low power soldering iron for this kind of work. I
> recommend the
> opposite, I use a 40 W iron for de-soldering work.
> The thing is, you
> want to heat the solder up quickly and pull the part
> out. By using a
> lot of heat the solder melts soonest WITHOUT transferring
> as much heat to surrounding parts.
And you're not worrying about damaging the parts you're removing since they're
already bad.
But do use a 15 watt grounded iron to install the new parts.
To be safer on removal, attach a ground wire to the barrel (or whichever part
holds the tip) of the big iron.
Don't use one of those big soldering guns with the loop style tip. Those create
a pulsating magnetic field all along the tip. I zapped about 50% or more of the
strength of a rare earth magnet using one to melt the magnet into a plastic bin
to hold the lid closed. Didn't hold very well then!
That type of soldering gun will create pulsating magnetic fields in the traces
on the board and in component leads through induction.
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