clean coating from PCB

Dec 10, 2004 2 Replies

I took apart a UPS, and the PCB, including a significant portion of the components on it are coated with some kind of clear and shiny lacquer. This is nice for some things, but now I can't read the markings on the chips. What kind of cleaner is best to clean the coating from the chips?



TIA, aur


i'm sure this will work

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but i'm also sure it'll be toxic as hell so be sure to use it in a well ventelated area or outdoors

The clear coating is called conformal coating. I guess you've found out that there are different kinds of conformal coatings, silicone and urathanes. I have used Zip-Strip, a paint stripper, and it 'does not' remove any markings from the IC's. The conformal coating bubbles up. Use running water to wash the board off.

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