"Mooing" on a mac..!?!? (and heat again for MBP)

[Buffalo]

Foloowing the link to silvermac (on LGF's DVD thread) i found this quote:

"I bought my MacBook Pro (Core Duo, 1.83 GHz) in late April 2006 and apart from the heat issues I haven’t had any other problems that many (most) users have experienced, such as mooing, battery problems, stuck DVDs and so on."

I
d be curious if anyone knows what this "mooing" refers to.

When i run on battery i can hear a noise that appears to be coming from the speakers - its like a mooing i suppose, it waxes and wanes a bit like the fan, but its like electrical noise if that makes sense... Its sort of half-annoying so if there is a fix i'd like to know...

Also some people are mentioning an increase in heat on MBPs again after the 10.4.8 - as anyone here found that..? Mine got a bit hotter again, i haven't checked for the latest firmware updates. Would this be found using the software updates on the computer, or do i have to go to a specific page..?

Cheers again! ~PHIL

[The Dude]

Take it in for service as it's a known fault. Had it on mine and it was rightly fixed F.O.C.

It's a faulty temperature sensor I believe - starting and stoppping the fan repeatedly which produces the "mooing".

[cjs]

My Nov 06 Macbook stays cool and I can ever hear a noise from it, obviously sorted the problems on mine.

[sadako]

Must be something to do with the on-board Dogcow controller