I would definitely start with the headphone jack. It is solder on the logic board and is available here http://www.parts4ipods.com/epages/es115703.sf/en_GB/?ObjectPath=/Shops/es115703_shop/Products/TCH1STHDP and here http://www.ipadpartsshop.com/product_info.php?language=en¤cy=USD&products_id=358 and the instructions for the logic board are here [guide|632] Good Luck to you and let us know what worked. :-)