How To Clean A Circuit Board Without Alcohol. Use isopropyl or rubbing alcohol on the circuit board terminals to wipe off the residue. Once everything checks out, you may also want to envelop the edges of the new pad/trace with epoxy or solder mask to give the area increased mechanical strength.
Moisten the cotton swab in isopropyl alcohol. 7 remove and replace any obviously damaged components. If you have to make any chemical solutions to remove corrosion from the circuit board or battery, we recommend you use distilled water along with the desired chemicals.
There are a number of ways to deal with this type of contamination:
If you have to make any chemical solutions to remove corrosion from the circuit board or battery, we recommend you use distilled water along with the desired chemicals. You need to apply the isopropyl alcohol on the soldering side and not on the electric components. Using a solution mixed with alcohol, baking soda, and water. Moisten the cotton swab in isopropyl alcohol.