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- Path: news.delphi.com!usenet
- From: Jim <mij67@delphi.com>
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: How to Fix a blown serial port
- Date: Mon, 29 Jan 96 20:30:12 -0500
- Organization: Delphi (info@delphi.com email, 800-695-4005 voice)
- Message-ID: <prPKYrk.mij67@delphi.com>
- References: <4ebb66$pb7@sundog.tiac.net>
- NNTP-Posting-Host: bos1b.delphi.com
- X-To: Darius Taghavy <dart@ycrdi.com>
-
- >This is good advice! However, if the prospect of cutting/unsoldering chips
- >seems daunting, you can also piggyback solder the new IC - this worked for
-
- Sounds to me like you just got lucky. I wouldn't recommend soldering a
- good chip in parallel with a bad one (or a good one for that matter). The
- only way to guarantee a fix is to replace the bad components.
-
- If you are afraid of damaging the PC board when you desolder the bad IC, use
- the following method to help minimize the risk of damage:
-
- Carefully clip the leads on the bad IC at the body of the part. This will
- leave the pins of the part soldered into their individual holes. Now remove
- each pin independantly by applying enought heat to allow the pin to be
- pulled out with a needle nose. Don't apply TOO MUCH HEAT...2-3 seconds
- should be more than adequate. When you see the solder melt GENTLY pull the
- pin out. DON'T FORCE THE PIN OUT...it should practically fall out when the
- solder melts. Finally, take a piece of solder wick and remove the remaining
- solder from the holes in the PC board (and again, don't apply too much heat).
-
- The advantage of the above method is that you don't have to try and pry out
- all 14, 16, 20, or however many pins you have at the same time. Most people
- don't get all of the solder out of one or two of the holes and end up
- pulling the barrels out of the PC board.
-
- Good Luck!
-
- Jim
-