If you can't limit the temperature in your dishwasher to less than the
maximum ambient storage temperature of the IC's on the board, I know of no
dishwasher that will exceed typical commercial limits for such devices
unless you use a high-heat setting or run the dry cycle. I've done this for
years and, given a cycle with which to clean the garbage out of the
dishwasher, I've never regretted it. I can imagine some boards being really
hard to clean out if you wash dishes without first rinsing off the food,
though.
In the case of VERY dirty boards, e.g. those that have been sitting outdoors
for multiple years, it's advisable to remove the plastic tops of sockets, if
they're present, so the dirt will be washed out from under them. If you
can't do that, you're on your own.
Dick
----- Original Message -----
From: "Bob Shannon" <bshannon_at_tiac.net>
To: <classiccmp_at_classiccmp.org>
Sent: Saturday, December 29, 2001 1:42 AM
Subject: Re: Try it!!!! (Was - Re: One More PCB Dishwasher Question)
> Tried it.
>
> It toasted an EPROM, and a 68000N-10 in a plcc package.
>
> The heat is simply too high.
>
> Also, older boards often use TTL devices in the grey package that is not
> properly passivated. These often go bad without running them through
> a dish washer.
>
> For every person on the list who can look at a given board and decide
> what components may withstand this treatment, there is another who will
> not know a TCXO from any other oscillator, or some other component that
> will not stand this abuse (many won't, and only some of them are listed
below),
> and dammage something.
>
>
>
> Matthew Sell wrote:
>
> > For those who don't believe that it's okay - prove it to yourself.
Here's how:
> >
> > 1) Pick a dirty, filthy board that somehow seems to work, and is worth
very
> > little to you
> > 2) Make sure it doesn't have:
> >
> > a) relays
> > b) large capacitors
> > c) transformers
> > d) iron-core inductors
> > e) fragile labels or core memory
> >
> > 3) put it in your dishwasher by itself, with no detergent (just for
> > testing), and turn off the plate warmer and dryer
> > 4) wash it!
> > 5) shake off excess water after cycle finishes
> > 6) clean - isn't it?
> > 6) hang up to dry indoors for several days
> > 7) plug it in. Works, doesn't it?!! And clean, too !!!!!
> >
> > Don't take our words for it. Try it!!!! You'll be amazed at how clean
the
> > boards get, with so little effort on your part.
> >
> > - Matt
> >
> > At 11:22 AM 12/28/2001 -0600, you wrote:
> > >On Fri, 28 Dec 2001, Bob Shannon wrote:
> > >
> > > > Never run boards through a dishwasher!
> > >
> > >Oh no, not this thread again :)
> >
> > Matthew Sell
> > Programmer
> > On Time Support, Inc.
> > www.ontimesupport.com
> > (281) 296-6066
> >
> > Join the Metrology Software discussion group METLIST!
> > http://www.ontimesupport.com/cgi-bin/mojo/mojo.cgi
> >
> > "One World, One Web, One Program" - Microsoft Promotional Ad
> > "Ein Volk, Ein Reich, Ein Fuhrer" - Adolf Hitler
> >
> > Many thanks for this tagline to a fellow RGVAC'er...
>
>
Received on Fri Dec 28 2001 - 14:05:50 GMT