Sounds like you've burned out the left I/O board. Here's the part: [product|IF185-060]
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Sounds like you've burned out the left I/O board. Here's the part: [product|IF185-060] Here's how to replace it: http://www.ifixit.com/Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board/472/1#.T7piG47424U If you plan to sell it on eBay, please email me the sale number and I'll bid on it.