I am new here and this is my first post. I have tried many ways to fix the audio of my Macbook and nothing made it start working..No sound at all during startup etc. From authorized apple service center here, they squeeze cash to repair and their only solution is to replace the logic board for this!! All I can tell is that the problem is in the logic board and where I could find the Audio area?? And if there is a problem in a resistor etc, is it possible to get one.. I have the Macbook 1181 schematic that details everything..It says there are 4 parts under AUDIO and they are CODEC, SPEAKER AMP, JACK and JACK TRANSLATORS. From where I could find these and the connectors on the logic board. All I see are the connectors are labelled as "J7302" (For left hand speaker connector) and "J7303" (For R/H speaker)...I can send the pictures of the logic board so if there is any Avionic or and Engineer/Tech that knows, please guide me out and let people like us know to familiarize the logic board and there unit,parts, connectors etc..