[vcf-midatlantic] Recapping a Mac IIci

Richard Cini rich.cini at gmail.com
Mon Sep 21 10:30:17 EDT 2020

For the IIci, depending on model, it’s 10 SMTs and 4 through-hole or 13 and 4. On the second board I have, I was able to get the caps off by crushing the cans a bit and removing them. Traces held up fine.

I bought a special solder flux for SMTs (rather than the gooey orange flux paste I have now) that’s “no clean” (but I will anyway). The replacement SMT caps are all tantalums.

I too use lead/tin 60/40.

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From: Ethan O'Toole <telmnstr at 757.org>
Sent: Monday, September 21, 2020 10:23:48 AM
To: Sentrytv via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org>
Cc: Richard Cini <rich.cini at gmail.com>; Sentrytv <sentrytv at yahoo.com>
Subject: Re: [vcf-midatlantic] Recapping a Mac IIci

The problem is when the capacitors leak juice out it changes the chemistry
of the solder or something. Unsodering leaked caps is often a difficult

I don't know if the IIci uses surface mount caps or not. I haven't had one
in a long time (but wouldn't mind another one, they are cool. I was
eyeballing that one at Festivus or whatever.)

One thing you can do, clean it off as much as possible then try to add new
solder to the old solder first, then try to desolder it. Another trick is
cutting away the old cap first using snips, but this brings the risk of
pulling up traces.

Similar to the other poster, I always use leaded solder. I don't know
anyone that uses lead free at home.

On Sat, 19 Sep 2020, Sentrytv via vcf-midatlantic wrote:

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