electronic board cleaner.

[JSievers]

Has anybody a good procedure to clean electronic boards' with all
parts let on it.
I have an ultrasonic cleaner top. Can I use it and which cleaner can
be used for those bathtubs?

j.

 

[JeffM]

JSievers wrote:

Has anybody a good procedure to clean electronic boards'
with all parts

on it.
I have an ultrasonic cleaner top.
Can I use it and which cleaner can be used for those bathtubs?
​

3 parts of a good **Cleaning PCBs** thread:
http://groups.google.com/group/sci.electronics.design/browse_frm/thread/3a4dae29d65ea3e9/6af209b58befe13d?q=hygroscopic+*-polar-and-nonpolar-solvents+toluene+*-white-residue+polystyrene+*-whose-solvency-you-don't-*+Isopropanol+slow+agitation+Saponifier+xylene+Warm-HIGH-PRESSURE-*-*+dishwasher+activator-salts+weeks-*+Abetic-Acid+*-lots+removed-first
http://groups.google.com/group/sci.electronics.design/browse_frm/thread/3a4dae29d65ea3e9/ece03f5ba3e1f81d?q=until-*-*-sump-resistivity-reaches-*-*-*-*+*-modified-*-*-dish-washer+zzz+corrode+qq+Over-washing+ww+QFP
http://groups.google.com/group/sci.electronics.design/browse_frm/thread/3a4dae29d65ea3e9?q=*-*-*-*-*-*-*-trouble-with-*-the-no-clean-type+dishwasher+only-*-the-final-*-rinse+*-flux-messed-*-the-potting-process+*-*-hides-*+*-*-*-*-contaminated-*-*-before-*-*-soldering+*-*-*-*-*-hour-*-*-in-near-boiling-*-*-*-distilled-water+Electrical-leakage+Milled-*+hygroscopic+dishwashers+isopropyl

Another thread:
http://groups.google.com/group/sci.electronics.design/browse_frm/thread/e9839215ca3b32d3/67af558552f0bd0a?q=plastic+supposed-to-trap-*-*-*+zzz+solvent+qq+never-use-a-no-wash-flux+then-expose-the-PCB-to-*-*-*+*-*-*-*-*-conformal-coatings-that-use-*+no-wash-fluxes-contain+ww-ww+yy+solvents​

 

[Tony Burch]

"JSievers" <JSievers@nadhh.hanse.de.com> wrote in message
news:3101c63f-641d-42e0-940a-90a53703dde3@i29g2000prf.googlegroups.com...

Has anybody a good procedure to clean electronic boards' with all
parts let on it.
I have an ultrasonic cleaner top. Can I use it and which cleaner can
be used for those bathtubs?

j.

Those thread links given by JeffM are excellent if you find yourself in a
position where you need to clean off no-clean (or no-wash) flux residue from
boards.

"Cleanable" or "water soluble" flux is not a problem and you could maybe
just put water or isopropyl alcohol in your ultrasonic cleaner.

For "no-clean" flux, it is inert and is not supposed to be cleaned off the
board. If you do try, you end up with white residue which is difficult to
remove. A poster in one of JeffM's links says " I have learned the hard way:
never use a "no-wash" flux and then expose the PCB to any kind of solvent.".
True!

However, one of the other threads gives the tip 30% mixture of isopropyl and
70% plain ordinary "lacquer thinner" (mainly
toluene). Personally I have not tried that but it may be worth a try.

I have also heard of using high pressure steam cleaning for removing flux
residue but I don't have personal experience with that either.

Sometimes brushing in a solvent is more effective and quicker than
ultrasonic cleaning. I made a video where I do that at
http://www.youtube.com/watch?v=4mr9xSXfqVY

Anthony Burch http://www.SuperSolderingSecrets.com