Can lacquer save PCB?

Discussion in 'General Electronics Chat' started by hazzard, Mar 7, 2016.

  1. hazzard

    Thread Starter New Member

    Oct 8, 2008
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    what if i spray lacquer on PCB (e.g of television or cellphone) would it save from water/rust?

    Regards
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
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    Welcome to AAC!

    Are you referring to unpowered circuits? Immersion in water or tolerance to humidity? Exposed to elements or in an enclosure?
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Conformal coating.
    or Glyptal Electrical coating.
    Max.
     
    Last edited: Mar 7, 2016
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  4. tcmtech

    Well-Known Member

    Nov 4, 2013
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    Yes it will help considerably. I've done it many times to circuit boards that had to work in dusty damp or generally harsh environments.
     
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  5. ISB123

    Well-Known Member

    May 21, 2014
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    Acryilic spray will work too.
     
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  6. hazzard

    Thread Starter New Member

    Oct 8, 2008
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    0

    Was referring to powered circuits. Where I live there is alot of humidity due to which my television circuit gets rusty and have to get it repaired twice a month. I was asking if it would help me preventing the circuit from getting rusty but without interfering the electronics.
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Circuit boards are often dipped in Conformal coating, bit of a trouble if you need to repair in the future, although there is a solvent that is fairly good at removing it.
    Glyptal can be obtained from any electrical supplier.
    http://www.glyptal.com/
    max.
     
    Last edited: Mar 7, 2016
  8. #12

    Expert

    Nov 30, 2010
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    I have used Krylon Clear for 30 years. It only lasts about 3 years, but it's cheap and fast at a hardware store.;)
     
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  9. tcmtech

    Well-Known Member

    Nov 4, 2013
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    I prefer Rustoleum clear coat myself. I have few things that got coated at least 10 years ago that are still sealed tight.

    Well worth the extra $1.50 a can. :p
     
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  10. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    @#12 I am a believer in Krylon clear and have used it many times. It is an acrylic lacquer in the US. I am not sure what it is in other countries that are more acutely infected with the VOC virus.

    John
     
  11. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    In a pinch you can raid the wife's supply of fingernail polish
    :)
     
  12. JohnInTX

    Moderator

    Jun 26, 2012
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    I have always used HumiSeal conformal coatings with good results, FWIW.
     
  13. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Twice a month!! where do you live in the jungle!
     
  14. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Coastal areas often have an aerosol from salt-spray and, if also in a humid area, there can be severe land-based corrosion.

    There is a difference between a Sony/Samsung TV and a Visio/Deawoo class TV. Quality of conformal coatings to protect from humidity/salt spray/anything is one notable difference. Quality - thickness and chemistry and application methods - all determine the benefits and lifetime of effectiveness.
     
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