[rescue] Motherboard cleaning..

Barry Callahan barryc at rjlsystems.com
Thu May 16 11:36:50 CDT 2013

We actually have a dishwasher in our shop for the express purpose of 
washing PCBs, post assembly. In our case, they're cleaning excess flux 
and removing soldermask paste. (for preventing vias from being soldered 
when using a wave-solderer) They use rubber bands to hold the boards in 
place so they don't get jostled around.

If the board is really bad, you might put it in for a full wash + rinse 
cycle ** DO NOT USE DETERGENT ** and use the high-temp wash & rinse 
settings if your dishwasher is so equipped.

The alcohol bath may not be a bad idea, but it's not something we do 
here. To dry out the boards, we actually stick 'em in an environmental 
chamber and bake 'em at ~60 celsius (140 F) for a couple hours. Your 
oven's "warm" setting would probably work just fine.

On 5/16/2013 11:39 AM, Christopher Purdy wrote:
> After some research I found this:
> http://www.youtube.com/watch?v=De8BV-2mxec
> It would appear feasible..  I plan to do this to my fouled MDD in the next
> few days... I will be taking one additional step though - 90% iso alcohol
> bath post wash... and then I'll let it dry under a fan.
> I'm hopeful after watching the video..

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