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- Path: sparky!uunet!wupost!spool.mu.edu!agate!agate!phr
- From: phr@soda.berkeley.edu (Paul Rubin)
- Newsgroups: comp.dcom.modems
- Subject: Re: 16550AFN replacement for soldered-in 8250.
- Date: 12 Sep 92 10:53:38
- Organization: CSUA/UCB
- Lines: 24
- Distribution: world
- Message-ID: <PHR.92Sep12105338@soda.berkeley.edu>
- References: <1992Sep08.231048.3194@gremlin.muug.mb.ca> <716263250snx@n5ial.chi.il.us>
- NNTP-Posting-Host: soda.berkeley.edu
- In-reply-to: jim@n5ial.chi.il.us's message of Sat, 12 Sep 92 02:00:50 GMT
-
- [suggestion to buy Radio Shack desoldering tool and remove
- 8250 with it]
-
- Don't bother buying a tool just to remove the 8250. Since you're going
- to throw away the 8250 anyway, just remove the plastic package from
- the board by cutting off all the pins (Dremel tool is the quickest way).
- Then it's easy to unsolder and remove the pins one by one.
- You can also remove the chip without damaging it by desoldering all
- the pins with solder wick. Cheaper than a spring loaded vacuum
- desolderer and works better than a squeeze bulb.
-
- It's ok to work on PC boards with a 40 watt pencil iron, just be a
- little careful. It's also ok to use an ungrounded soldering
- iron--those generic SIO boards cost what, $10 or so? You may have a
- slightly greater chance of zapping the board than you would with a
- grounded iron, but if you do zap it, just buy another board and try
- again. Cheaper than buying a $20 grounded soldering iron just to
- remove one chip. Of course, if you solder often, buy the grounded
- iron (or a temp. controlled soldering station)...
-
- PS. Radio Shack was selling a decent quality 25 watt pencil iron for
- about $6 last time I looked (a year or so ago, maybe).
-
- Paul (WA2QYN/6)
-