From: GOOI@oce.nl (Gooijen H)
Subject: [TUHS] PDP11/34 boot problems, here i am again :)
Date: Tue, 15 Apr 2003 08:37:20 +0200 [thread overview]
Message-ID: <1A9EACFF5B9EB9489F00104C00ECF6410CBC02@hqvenlomail.oce.nl> (raw)
"asbesto" wrote:
> 1) a 74LS175 chip named E15 on our schematic diagram, that seem
> phisically BROKEN on an edge (there is a fessure on the plastic
> DIP package). i can't change it now because i don't have a
> soldering station here to do a nice job, but looking the chip i
> think it may work...
I never remove IC's in *one* go. The chances that you damage the
multi-layer board beyond repair are real. This is what I do.
I use a dremel tool (small motor with sharp rotating blade) to
cut the pins of the IC one by one.
Don't use a cutting tool to cut the pins because the side force
might push the remainder of the pin through the solder joint
thus damaging the board.
After you have cut all the pins the IC just falls of the board.
Now, you can use a fine hot soldering iron and remove the pins
one by one use a pair of squeezers.
good luck with your repairs,
- Henk.
next reply other threads:[~2003-04-15 6:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-15 6:37 Gooijen H [this message]
2003-04-15 8:50 ` asbesto
-- strict thread matches above, loose matches on Subject: below --
2003-04-15 19:42 Carl Lowenstein
2003-04-15 21:22 ` asbesto
2003-04-15 0:00 asbesto
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1A9EACFF5B9EB9489F00104C00ECF6410CBC02@hqvenlomail.oce.nl \
--to=gooi@oce.nl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).