New power and fan weirdnesses...

Okay, here we go again:
- Yesterday, I calibrated my MB using Apple's procedure. Use it afterward (yesterday night), everything's fine. Put it to sleep for the night (closing the lid).
- This morning, I open the lid, the MB wakes up, but then shuts down for no reason.
- I then try to restart it. I push the power button, the white LED turn's white, then shuts off, the MB doesn't start up. It does it several times.
- I search the Discussions (with my other Mac), find this and try it:I take off the battery, plug the AC, push and hold the power button (which does something odd, like the white LED flashing and then a big BIP sound before the Apple chime) and the MB starts.
- I then put back the battery, restart the MB, with no result, several times.
- I redo the previous procedure, it works, I search Apple Support, find an article about resetting the PMU (shut down, unplug AC and battery, push power button 5 sec, plug everything back, restart). I do it, it seems to work.
- No longer works. Redo the "bip sound" procedure, the MB starts up. I can unplug the AC and use it (like now).
- So now, I can use my MB but I have not restarted it solely on the battery yet.
But then, the cherry on the sundea: my fan is always on... This symptoms appeared after the "bip sound" or the "reset PMU" procedure.
Any comments or suggestions? Thanks for reading...

As I said, I prought back my MB to the store so a tech could look at it. I talked to him today and he told me that he would replace the logic board. I keep my fingers crossed event though I do not have high hope...
As for the fan staying on all the time and/or making a lot of noise, it will occurs only after the push'n'hold power button and long beep procedure.
By the way, if a moderator is reading this message, I would like to have my other topic back ("Hello Apple, reading this??"). Just erasing it because I asked you to talk to us is not a pretty nice thing to do...

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^
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