2 Aug
2001
2 Aug
'01
12:19 p.m.
On August 2, Bill Bradford wrote:
I've never been able to bring myself to do that myself, but I know
of several people who swear by that method.
One issue with that much water is stickers...most sticker solvents
won't last through that sort of beating.
On boards that
don't have to many nooks and crannies stick them in the
dish washer, but without soap, or very very little. The soap tends to
corrode bare metal. I then hang on to them securely and fling the water
off, as best I can, then stick them in front of a fan. If you have an
air compressor you can stick all board in the dishwasher, and then blow
them off.
Did you just tell me to put CIRCUIT BOARDS in the *DISHWASHER*? Or
do I still have a fever and am delirious.. ? I've always thought that water was the mortal
enemy of anything electronic,
at least while power was applied. 8-)
On the table on the other side of this room I have a Sun monitor
that I got from a surplus house for free. It had been sitting outside
fully exposed to the weather for upwards of six months. I've had it
for nearly five years; it's still going strong!
Contrary to popular belief, water itself is a near-perfect
insulator. It's the crap dissolved in, and the particulate matter
carried by, said water that causes problems with electronics.
If you can find Freon TF, fill a dish pan with an inch or so of it
and dunk the boards. It will get the dust out of those hard-to-reach
places.
And it's also great with vodka.
-Dave
--
Dave McGuire
Laurel, MD
2:36 p.m.
On 2 Aug, Dave McGuire wrote:
On the table on the other side of this room I have a
Sun monitor
that I got from a surplus house for free. It had been sitting outside
fully exposed to the weather for upwards of six months. I've had it
for nearly five years; it's still going strong!
Once I found a Sun 3/160 CPU
card at the scrap yard. It was out in the
rain for -I don't know how long- and the iron parts like screws had
already collected some rust. I took the board home, washed it in the
shower, dried it, supplemented the missing chips (CPU, FPU, ...),
pluged it in and it did work as new.
The same for a 3c509 ISA NIC that was covered with mud. This card is
the secondary NIC in my main server for years now.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
9:39 p.m.
On Thu, 2 Aug 2001, Dave McGuire wrote:
On August 2, Bill Bradford wrote:
Guys, check out a board stuffing house or someplace that has a PCB
assembly line sometime. Now that the EPA has regulated volatile organic
compound-based fluxes and solvents (like alcohol), most places use a
water-based flux. A couple of years ago a place I worked at changed over
to a lemon juice-based flux. It worked just as well as the propan-2-ol
stuff and smelled better. But, it was conductive. So, we went out and
bought a Frigidaire dishwasher and put it at the end of the line, just
after the wave solder pot. After the boards came out of the pot, they
went into the cooling racks, then right into the dishwasher for a hot
cycle, no soap. And when we had a company dinner (it was a small
company), I'd get stuck cleaning out the wire ends and odd resistors and
capacitors that didn't solder out of the bottom before we put the
dishes in. Never had a problem. The only things you need to look out for
are electromechanical items that are not washable- some switches,
speakers, potentiometers, and such. Those things tend to trap or absorb
water.
Richard Schauer
rws(a)enteract.com
Did you just tell me to put CIRCUIT BOARDS in the
*DISHWASHER*? Or
do I still have a fever and am delirious.. ?
I've never been able to bring myself to do that myself, but I know
of several people who swear by that method.
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jkunz＠unixag-kl.fh-kl.de -
mcguire＠neurotica.com -
mrbill＠mrbill.net -
rws＠enteract.com