In response to Markus' post, after extensive testing of my logic board and instense examination, there was nothing found that could explain the board's malfunction. I ended up purchasing a very lucky find; a broken logic board that I hoped I could fix. (It had a dismounted IC) and luckily, it DID work after the repair of the IC. Anyway, my only solution was merely getting a new logic board. I bought the other broken one because it was much less expensive than a working one. I wish you the best of luck with your PowerBook! Sorry I couldn't have been of more assistance. :(