Hi all, I have a white macbook A1181. It is a 2Ghz Core 2 Duo. I have a problem with my topcase. I tried a lot of things already, but then I do not know. He was no longer detected. I replaced it and same result. I cleaned the connector with alcohol with a brush ... But nothing was done. I redid the solder points of the connector and now it works! But only 1 minutes or 2 ... After it stops functioning without doing anything ... I do not really know what to do .. Any ideas?