Fan behaviour in MBP 1.83

Hi there,
last week my Apple Service Provider swapped the logic board of my MBP because of the processor whine. He did it twice: after the first swap, the whine was still audible (but only with power supply attached), so they swapped it a second time.
No change, whine still audible, well, some kind of...
because now, the fans are running almost ALL TIMES!
They start right after booting, when I open Mail, browse the web, and are revving up like crazy when running VLC or similar.
CoreDuoTemp shows a processor temperature of never more then 52 deg Celsius, the MBP is quite cold right know.
But the noise is inaceptable. I can't think that this is considered to be "normal behaviour". This is what my ASP said, and he said he can't change something with it except sending the MBP to Apple for further examination, which will take 2-3 weeks (impossible for me).
So, any ideas/help to get out of this?
TIA
Matthias
MacBook Pro 1.83   Mac OS X (10.4.7)  

Matthias, it sounds like the sensors were not properly reconnected during service. Only remedy is a trip back to Apple.

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