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Protection Against Moisture Attack For PCBs

By Jestine Yong on February 2, 2013

I've got an email recently and here is the email content:

"I have a SMPS in service in a product we sell. We have 300 of these in service, and have had many fail recently due to weather. We think maybe because of high air moisture due to a cyclone that just hit Australia. there is some corrosion showing in the feedback section of the PS directly below the fan. In your experience, is there anything we can do to prevent moisture attack on the PCB level? We are looking at replacing about 15 of these from this one event. Any comments would be appreciated.

thanks

Mr B.K

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So far I have not come across such problem before on the PCBs due to moisture attack but I did suggest that he try out the product below. You may click on the link to the website.

If you have any suggestion and solution for moisture attack on PCBs please do leave a comment below thanks.

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moisture attack on PCBs

7 Comments

beh

April 22, 2013 at 4:59 pm

HI MR YONG
thanks for your efforts to bring back this weblog.
beh

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- Jestine Yong
  
  April 22, 2013 at 8:43 pm
  
  HI Beh,
  Still lots of work need to be done. Thanks for the support.
  
  Jestine
  
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Jackson Lui

April 22, 2013 at 10:29 pm

Hi Jestine,
I know that to accomplish this high level of service, you worked extremely hard and sacrificed a great deal. Keep your excellent work. I'm looking forward to your continued energy & enthusiasm.

Bye for now.
Jackson Lui -HK.

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- Jestine Yong
  
  April 23, 2013 at 10:55 pm
  
  Hi Jackson,
  
  Thanks for the support. But this comment may not be able to save after loading my new backup tomorrow. Thanks a a lot.
  
  Jestine
  
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Siri Weeratunge

April 30, 2013 at 12:13 pm

Congratulations and all the best.
regards,
Siri.
PS. Although I would have liked to write a longer message, my finger dexterity is rather limited after the recent stroke I suffered.

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Amir Mukhtar

April 14, 2014 at 12:22 am

Sir Jestine
Thanks you for Moisture Solvent in order to remove moist from PCB s.
The above liquid solution is good. However, Phillips degreaser, Perfect degreaser and service with blower / thermal hot air may be solved the issue. Also, cleaning with some dry solvent like petrol / Thinner might be useful so as to complete remove the moist problem.
I do use always home made solvent in normal repair at workshop like-wise light category thinner.

Thanks you
yours Student
Amir Mukhtar

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- Jestine Yong
  
  April 14, 2014 at 12:46 pm
  
  Hi Amir,
  
  Thanks for the content.
  
  Jestine
  
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