I have to second this comment.
I learned to solder in the early 70s building kits and again
professionally in the early 80s.
In the early days of thicker circuit boards (2 layer only). A solder
sucker and solder wick would work.
However, the most expedient and safest way in terms of potential board
damage, is to cut out the bad chip, then take the pins out one at a time
and then suck and wick out the holes.
This presents the smallest risk of damaging traces or the plating inside
the holes.
On 4/15/2022 12:51 PM, Chris Zach via cctalk wrote:
Cut the pins with a very sharp set of dykes then remove them one at a time.
Then use flux and detailer braid to remove the solder
On April 15, 2022 1:49:33 PM EDT, Rob Jarratt via cctalk
<cctalk@classiccmp.org> wrote:
I am trying to remove an IC from my PDP 11/24 CPU, a DS8641. I am really
struggling to desolder it. I am using the technique of applying fresh solder
and then removing it. But after multiple cycles of this I think I am
starting to damage the PCB.
I am using a fairly cheap desoldering station (this one
https://cpc.farnell.com/duratool/d00672/desoldering-station-uk-eu-plug/dp/SD
01384?st=duratool%20desoldering). Its spec in terms of vacuum pressure is
equivalent to that of the professional Hakko ones though. I am also trying a
hand desoldering pump. None of these are able to clear many of the holes of
solder, although some are doing better than others. Nevertheless, the IC
remains stubbornly unmoving.
Are there any tips for removing ICs?
Thanks
Rob
