Hi Jeguar
I have had the same issue the last 2-3 month - if my Macbook Pro 1.83 A1150 lost the power or ran out of power I have really difficult to get it started - I have reset everything and sometimes I am lucky to get it started - but I haven't found the way - so now I was looking for a new DC-board or I/O-board for replacement.....and I just stumpled over your altenative
And it worked for me the first time - I started the computer for 5 min and turned it off and on again and it started for the time after a weeks struggle
But still - I would like to eliminate this so if any got a solution please let me know
Thanks
Allan