Removing PCB potting

Discussion in 'General Electronics Chat' started by R!f@@, May 10, 2010.

  1. R!f@@

    Thread Starter AAC Fanatic!

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    See the attach.
    To remove the potting,. should I boil it or microwave.
    The potting can be chipped off with iron
     
  2. beenthere

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    Acetone works pretty well, if you don't mind the fire and explosion hazard.
     
  3. R!f@@

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    acetone.? would it melt the potting.
    If it explodes then I might have a little trouble explaining myself to the cops u know.
     
  4. retched

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    If it explodes, the cops may have a little trouble finding ALL of you. ;)
     
  5. beenthere

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    Seriously, acetone will remove a lot of stuff. It's not too good an idea to leave the PCB soaking for too long, though, as it will remove the paint from resistors and the epoxy from the FR4. Your PCB gets a bit floppy.
     
  6. retched

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    You can then soak it in 2 parts water and 1 part Viagra. Stiffens that puppy right on up. Just take it to the hospital if it stays that way for more than 4 hours. ;)

    However, a quite hot, water bath will work. But you MUST dry the dickens out of it before power up. There are many a technique for PCB drying. I find qtips and ather absorbents, time, and a blowdryer on cool or medium, does well. You will want to let it sit for a few days still to let any capilarily wicked water in hidden spaces to dry.
     
  7. R!f@@

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    I'll give the water bath a try
     
  8. R!f@@

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    The hot water bath failed :(.
    So next thing close was the microwave.
    Put in their and gave a 10 sec run.....the whole thing exploded. :eek: good thing evry one asleep. I'll be in big trouble if mom found out :D
     
  9. retched

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    You put it in the microwave?

    oh jeez. ..I dont... never mind.

    slap your head a few times for me, would ya riffa?
     
  10. R!f@@

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    Kekekeke. hey there is always a first time. A word of

    Caution... never microwave semiconductors. Bad Idea

    But it paid off, I found the fault. Besides the exploded IC's and caps :D
    I found a scorched and a crispy transistor inside. Now that I know wasn't the result of microwave.
    That PWM driver was toast already.
    Oh by the way it's a cheap tread mill 200V DC motor driver. Just one analog control was there beside the safety switch.
    Now I need to build a new driver for it.
    Any leads anyone? :)


     
    Last edited: May 12, 2010
  11. retched

    AAC Fanatic!

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    Check the top of the inside of your microwave for impaling via silicone. ;)
     
  12. R!f@@

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    Naa.. microwave is still intact.. I have to check..any problem and mom wud kill me.
     
  13. retched

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    Then you will REALLY be a legend. ;)
     
  14. R!f@@

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    why shud I need be dead....I am trying to change the trend.
    I want to be alive to be a legend.
    Hey by the way. have you checked that shipping charge I requested.
    You never replied or did you?
     
  15. retched

    AAC Fanatic!

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    Yes. I replied. Are you talking about the glue or the supplements.

    And I meant your mother would kill you, then you would be a legend.

    1 pound or less to you is $11.46 for shipping.
     
  16. R!f@@

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    OKI DOKI....

    I really am strange, aren't I? :D
     
  17. retched

    AAC Fanatic!

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    Yes. yes you are.

    Who else microwaves ICs?
     
  18. R!f@@

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    no one I guess, well. I guess that makes one and only :D
     
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