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Message from discussion Cannot remove caps from motherboard
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Michael A. Terrell  
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 More options Sep 23 2012, 3:55 pm
Newsgroups: sci.electronics.basics
From: "Michael A. Terrell" <mike.terr...@earthlink.net>
Date: Sun, 23 Sep 2012 15:55:07 -0400
Local: Sun, Sep 23 2012 3:55 pm
Subject: Re: Cannot remove caps from motherboard
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Anonymous wrote:

> I'm trying to repair my MSI motherboard by replacing the caps near the
> regulators since they are bulging and are most likely defective.
> However, even at the highest setting of my soldering iron (480 degrees
> Celcius) I'm unable to liquify the solder. I don't know what kind of
> solder they're using for motherboards but it's obviously not the kind
> you can easily manipulate with common DIY tools.

> Anyone have a trick for solving this problem?

   What tools are you using?  A vacuum desoldering iron is the proper
tools.  Solder wick is a poor second choice.

   Remove what you can, then refill the hole with 63/37 solder which has
a lower melting point.  The ROHS crap solder takes a lot more heat to
melt.  Clean off the excess flux, then use the vacuum tool again.  The
flux will destroy the hollow tip in a hurry.


 
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