Gday guys I have an 820-3437 board that was liquid damaged and would not turn on and had corrosion all around LP8550, short on LCD connecter. after these few components were replaced I now get a chime and it now boots into OSX. the problem I'm having is the fan stays on high after about 1 minute and everything is loading very slow. could someone please assist me with a link to 3s156 as I'm having trouble locating the file. any assistance would be gratefully appreciated.