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MacBook Pro :: Fans Seems To Run Continuously

I have recently noticed that what I believe to be the fans are running all the time. I do not believe this is a function of heat. Restarting doesn't make it go away.

MacBook Pro
Mac OS X (10.4.10)

View 6 Replies (Posted: Mar 3, 2010)

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I just got a new 17" Unibody 2.66 and the fans run continuously at 6000rpm. For example, right now they are running at 6000 w/ temps of:
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GPU Diode - 38
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This is on a clean install with only Safari running.

What's the deal?

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So I turned it off, and that was basically it. It wouldn't turn on again, regardless of whether or not the charger was plugged in. Eventually I got it to boot by doing an SMC reset, but now the fans run at 6000RPM and it says it's at 0C and the fans are running at 0RPM.Which is making me believe that the temp sensor is screwed.

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So here's why I am concerned. When running VisualHub in particular, my fans and temp go up absurdly. According to iStat, my fans are over 6000 rpm and my CPU temp hit 92c the other day. I shut it down bc I was having visions of my MB melting in front of me. I have even gone as far as propping up the back to allow for more air flow but that hasn't made any difference as long as I use pretty much any video conversion apps. Games (like Spore) make it hot, but not like this

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It's a 2.0 GHz dual-processor with 8x AGP video. I checked it out and the only thing "wrong" with it is that someone has set up the fans, all of them, to run full-speed all the time.First, how did they most likely do that and, second, how can I return the fans to their normal operation. This can't be good for the computer and it's so loud and annoying that I'd rather use my G4.It's a great computer otherwise, I hope they didn't do something permanent that would require a new motherboard, that's not in my budget.

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Any tips on how to fix this? I took the computer to the apple store 3 times for this issue but every time they "could not recreate the issue". The last time the replaced the fans in the computer, but that didn't fix anything.Anything that would point me in the direction of fixing this? It's just melting itself. Alum. iMac.

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the only thing new lately is that I installed Leopard 10.5.3 on my dual 2.0 GHz G5 tower.

I usually sleep my machine all the time

now it's a crapshoot whenever I sleep it whether or not it will go to sleep normally, or freeze in a state of screenless unresponsiveness with the fans running on full blast with no way to stop except a hard shut down or power kill

other than this the machine is literally working just fine. Never interferes with my work.

I don't know if this is 10.5.3 related or not, but I do wonder.

I started up from an applecare disc and did a full diagnostic and everything checked out

I guess I'll have to test Tiger sometime again but that'll be a pain because I'm already addicted to Leopard

I just hope this old faithful tower isn't going dead on me. and I wish there was some official word if this was just a 10.5 thingy

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So today i wake up, and i go to wake up my G5...and i get..nothing...yea it turns on, but no run, hard drives spin up

So i power down, power back up, and i get fans, no chime, and 3 blinking LEDs. ALright, fine, i know that means ram. So i spend the next 20 minutes removing ram, testing it, matching it, testing other ram, etc...

At one point it did boot, when i ran it with 2x512, and i unplugged the DVD drive, but i couldnt get it to come back after that.

Ive tried resetting the SMU/PMU. Dont even bother telling me try open firmware or zap pram, cause i cant get to the open firmware screen.

Now, i am seeing a TON of these posts for G5s. Is apple going to do anything for us? or are we to expect only a few years out of our new machines til they die and we have to buy new ones?

Also, since apple replaced my logic board, does that mean my serial number changed? as far as i know the machine is out of warranty, since they only added a 90 day one on with the new board..and that was replaced last april..

any ideas? i hate PCs and this experience doesn't fill me with confidence in getting a new mac...that is if i could, since i'm flat broke thanks to the economy, with plenty of projects coming up that i need my mac for, but hey, doesn't look like thats going to happen.

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