23 Feb
2000
23 Feb
'00
11:44 p.m.
I have here a perfectly good SCSI device I'd like to use, it's just that
the +12V pin in the power connector has broken off. Can I just solder another
pin right on the trace on the PCB, or is there some sealer over the traces?
(Or anything else I should know about?)
-------
24 Feb
24 Feb
12:12 a.m.
At 05:44 24-02-2000 -0800, you wrote:
I have here a perfectly good SCSI device I'd like
to use, it's just that
the +12V pin in the power connector has broken off. Can I just solder
another
pin right on the trace on the PCB, or is there some
sealer over the traces?
(Or anything else I should know about?)
There may be solder mask (easily scraped off), but beneath it you should
just be dealing with regular tinned copper.
Be sure to make a solid connection! The +12V lead in most disk drives
supplies the spindle motor, and that means lots of milliamps (or outright
amps in many cases).
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner and head honcho, Blue Feather Technologies
http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com
Amateur Radio: WD6EOS since Dec. '77
"Our science can only describe an object, event, or living thing in our
own human terms. It cannot, in any way, define any of them..."
2:26 a.m.
"Daniel A. Seagraves" wrote:
I have here a perfectly good SCSI device I'd like to use, it's just that
the +12V pin in the power connector has broken off. Can I just solder another
pin right on the trace on the PCB, or is there some sealer over the traces?
(Or anything else I should know about?)
Aside from Bruce's comments, I would add that you need to make sure there is
no stress placed on the trace after soldering. The bond strength of the
copper to the laminate is not very great, and it is quite possible to pull
the trace off.
3 a.m.
Aside from Bruce's comments, I would add that you
need to make sure there is
no stress placed on the trace after soldering. The bond strength of the
copper to the laminate is not very great, and it is quite possible to pull
the trace off.
You may have to scrape the solder mask off to get a good connection, use
minimal heat. When done clean well and it's not a bad idea to put a drop
of epoxy on the area and maybe the back of the connector (where the pin
goes through the board) to support it.
Allison
4:28 a.m.
Dan,
None of us have any way of knowing there is sealer over the traces.
You'll have to look for yourself. Scrape it with a sharp knife and see if
you get copper or a sealer. IMO it's not a good idea to solder the pin to
the trace, there's just too much leverage on a pin to expect it to hold.
I'd just solder a wire to the trace and solder the other end to the pin and
then plug the pin into it's mating socket and let it hang free. Be sure
and insulate everything.
Joe
At 05:44 AM 2/24/00 -0800, you wrote:
I have here a perfectly good SCSI device I'd like
to use, it's just that
the +12V pin in the power connector has broken off. Can I just solder
another
pin right on the trace on the PCB, or is there some
sealer over the traces?
(Or anything else I should know about?)
-------
5:18 a.m.
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5 comments
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participants (6)
-
allisonp＠world.std.com -
ard＠p850ug1.demon.co.uk -
DSEAGRAV＠toad.xkl.com -
kyrrin＠bluefeathertech.com -
marvin＠rain.org -
rigdonj＠intellistar.net