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- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!cs.utexas.edu!milano!cactus.org!wixer!reaper
- From: reaper@wixer.cactus.org (Keath Milligan)
- Subject: Re: 16550AFN replacement for soldered-in 8250.
- Message-ID: <1992Sep9.154036.18516@wixer.cactus.org>
- Organization: Real/Time Communications
- References: <715627191snx@crynwr.com> <1992Sep08.231048.3194@gremlin.muug.mb.ca>
- Date: Wed, 9 Sep 92 15:40:36 GMT
- Lines: 46
-
- In article <1992Sep08.231048.3194@gremlin.muug.mb.ca> charles@gremlin.muug.mb.ca (Charles) writes:
- >nelson@crynwr.com (Russell Nelson) writes:
- >
- >>My serial port board has one socket, and one soldered-in 8250. I
- >>didn't want to use the socket, because that means buying the line
- >>drivers and external DB-25.
- >
- >For which after doing the below, probably ended up costing you more!
- >Those little cables can be picked up for a buck, and the drivers are what?
- >89 cents each?
- >
-
- Yeah, if it alreayd hjad a socket, that probably would have been the
- easiest...
-
- >>I don't have the equipment for
- >>desoldering a 40-pin IC. Wire-wicking the solder off each pin, while
- >>an impressive feat, gets old fast.
- >
- >Get one of those de-soldering irons from Radio Shack with the bulb.
- >(No, I'm not talking about a seperate iron and bulb, RS makes an iron
- >with the bulb mounted on a steel tube that gets hot, melts the solder and
- >is sucked into the tube). I bought mine several years ago, works like
- >a charm. I can remove a 40 pin IC in 2-3 minutes.
- >
-
- Depends on the type of stuff you're desoldering.. Some wave-soldered
- stuff is especially resistant to solder-suckers..
-
- >>So, I got out the trusty dikes,
- >>and clipped off the pins of the 8250, and discarded it. I didn't
- >>desolder the pins even though it would have been easy at that point.
- >>I just put my shiny new 16550AFN over the remaining 8250 pins and
- >>soldered them together.
- >
- >Probably not the most reliable thing to do, but if it works....
-
- You had the right idea by clipping the pins off the 8250, after you had
- done that it would have been very easy to remove the pins with some wick
- and using a toothpick to clean out the holes...
-
- --
- oooooo ooo o o o Keath Milligan o o ooooo oooo oooooo
- oooo oo ooo o o Prometheus Light and Sound, Inc. o o o ooooooooooooo
- oooooooo o oo o Real/Time Communications o o o ooo oooooooo
- oooooo oooo ooo o internet: reaper@wixer.cactus.org o o o ooo oo ooooooo
-