anyone know about ultrasonic cleaning mobo's?

[Sa7aN]

i recently came into ownership of an s20h ultrasonic cleaner with heat and sweep functionality. anyone know how to go about using this to clean liquid damaged laptop motherboards?

 

[Zap]

If the laptop motherboards were actually damaged due to being running when the liquid contacted them, then cleaning them would not reverse any damage.

 

[Sa7aN]

If the laptop motherboards were actually damaged due to being running when the liquid contacted them, then cleaning them would not reverse any damage.

well yes i understand that but i have had some very good luck with cleaning them off even if there is some corrosion using a soft bristle tooth brush and either denatured alcohol or distilled water depending on the spill.

the only reason im trying to use an ultrasonic is on the few i have and the future ones that might have some residue underneath the surface mount components of the board that i cannot clean. unless a component is physically damaged ive found most of the times it is just a short caused by the residue keeping the board from functioning.

i am just looking for any tips at ultrasonic cleaning pcb's that anyone might know :thumbsup:

 

[Sa7aN]

how would i go about getting this thread moved to highly technical?

 

[corkyg]

Zap can move it for you.

 

[mindless1]

It's not very highly technical. What is there to know? Remove any fan(s), battery, ground yourself while handling it. Put it in detergent/alcohol solution. Usually hot detergent is enough, no alcohol needed.

Basically even if a liquid itself isn't corrosive, there is still water soluble flux residue that remains and as the liquid dries to an ever smaller droplet the acidic flux becomes more and more concentrated leaching away metal to form conductive shorts.

Keep in mind I don't use an ultrasonic cleaner. I use soaking, a toothbrush, and a turkey baster for flushing under chips. I don't bother with distilled water, plain old hot tap water then a rise after the detergent bath and a few gentle shakes to get any water out under chips. Rinsing with alcohol/water solution would mostly eliminate the shaking.

 

[Zap]

Zap can move it for you.

I suppose I can. :sneaky: