Planet mk3 input/output noise, Need help!

[phamandp]

Hi everyone, I have a problem with my mk3 controller board. All of it's input/output had noised after getting wet during operation.
This link below show exactly what going on with it. Can you give me some advise?


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[PlanetCNC]

Which part of controller got wet?

[JerryBurks]

Was it just water or something else? If the liquid contained any salts you may be out of luck. I believe the boards are conformally coated but even that is not always waterproof.
Did you try to bake the board at, lets say, 70 degrees C for a while? There may be some liquid hiding under the chips that takes longer to dry out.

[blowlamp]

It might need some compressed air around it to shift any remaining moisture.

[phamandp]

Which part of controller got wet?

Water overflow on the upper surface of the board. LIMIT, JOB and IN/OUTPUT ports were no longer seems to work correctly. What do you think about replacing the HC224 IC ? Thank you a lot.

[phamandp]

Was it just water or something else? If the liquid contained any salts you may be out of luck. I believe the boards are conformally coated but even that is not always waterproof.
Did you try to bake the board at, lets say, 70 degrees C for a while? There may be some liquid hiding under the chips that takes longer to dry out.

Thanks Jerry, It's just only water and I haven't tried your way yet. I will give it a try.

[phamandp]

It might need some compressed air around it to shift any remaining moisture.

Thanks for your advice. I tried to dry it with compressed air even the dryer but nothing changed (