[sdiy] SMT?

[Grant Richter]

Hi Terry, all

Here is a technique for hand soldering large gull wing flat packs, your
mileage may vary.

Think backwards.

Instead of worrying about shorting leads, flood the whole row with solder,
shorting all the leads.

The use solder wick to REMOVE solder until all the leads are unshorted. A
magnifier is real handy for this part.

Kind of scary, but it does work.

> From: Terry Michaels <104065.2340 at compuserve.com>
> Reply-To: owner-synth-diy at node12b53.a2000.nl
> Date: Sun, 8 Apr 2001 10:19:34 -0400
> To: "INTERNET:CHoaglin at aol.com" <CHoaglin at aol.com>, synth
> <synth-diy at node12b53.a2000.nl>
> Subject: Re: [sdiy] SMT?
> 
> Message text written by INTERNET:CHoaglin at aol.com
>> coincidentally, that's exactly what I'd like to figure out how to
> rework..I've got an industrial PC with an IDE controller chip that's 100
> pin 
> SQFP, and I'd love to know how to get it off the board and put another one
> on 
> (without a SMT rework station...) The idea of a heat gun crossed my mind,
> but 
> I'm not sure it's hot enough.
> 
> Anybody got ideas?
> 
> Chris
> <
> 
> Hi Chris:
> 
> If you don't need to re-use the chip you are removing, the quickest way to
> remove it is as follows.  Take a razor blade or exacto knife and cut all of
> the pins off the chip, right at the body.  Next, pluck the chip out,
> leaving the pins behind.  Now it is a simple matter to put a blob of solder
> down with your iron on the first few pins, and loosen and remove them.  You
> can then go all the way around mopping up a few pins at a time, solder wick
> is helpful.
> 
> Terry Michaels
>