A few points... Filtering does not remove Ions and they are responsible for the=20 conductivity of the water. 70% Iso alcohol is 30% water. If saving the keyboard is a financial problem you have already spent too=20 much time on it unless you are looking for something better to do than=20 watch TV. If it is an academic exercise and you are trying to learn how to do this=20 in the future, hang in there and don't give up! In that case, I wonder=20 if an ultra sonic (or audio?) water bath might do for the cause? Take an=20 aquarium, a speaker and ...... As always, your choice! John Ferrell W8CCW Every citizen should be a soldier. This was the case with the Greeks and=20 Romans, and must be that of every free state. Thomas Jefferson=20 On 9/20/2010 7:46 PM, V G wrote: > So the keyboard I was discussing earlier has been placed next to a > space heater for several days now. Most of the keys work, but some > keys still do weird things. What should I do? I have a bottle of 70% > isopropyl alcohol, but I'm scared that it will leave residue inside > the keyboard. Should I immerse the keyboard in filtered water and re > dry it? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .