I need advice on a Sailor Moon Brooch that only plays music when you put the batteries in. The push button doesn't work. I opened it up and noticed some grime and possible flux on the circuit board. I cleaned then grime around circuit under the button with 91% Isopropyl Alchocol and it leaves a white residue. The push button still doesn't work. I was going to finish cleaning the grime off the entire circuit board but noticed that there appears to be a scratch on the path under the button. (At the bottom of the circuit between the two bottom nodes on the left). Do you think that is the problem or if I finish cleaning the grime then the push button will work? Should I continue to use the alcohol or something else? It is a really nice toy. Your advice would be appreciated. See the attached pictures
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