Fan 0 RPM

Question

Level 1

1 points

Fan 0 RPM

Ok went into apple store, and did a diagnostics and my fan came back dead..... i download istat and smcfancontrol and the fan is speed is reading 0 rpm and the computer temp 65 degrees celsius is that too hot, when i touch the bottom of my macbook it seems really really hot to the touch, can no fan cause USB drop outs and stalls in your macbook

Macbook 1,1, Mac OS X (10.6.7), 2GB Ram 2.0GHZ 160GB HD

Posted on Mar 29, 2011 3:52 AM

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Answer 1

JoeyR

Level 6

8,305 points

Mar 29, 2011 5:34 AM in response to DJ_Maestro

65 C is a temp I would expect to see under moderate usage. Your CPU can safely operate up to about 100 C (although you should never see it get that hot). I'm more curious about your reported fan failure. If your fan were not operating, you would not be seeing a 65 C temp (at least not for long). The cooling system in the MacBook is not capable of passively dissipating any significant amount of heat. Without the fan, it would quickly reach that 100 C point and suffer a thermal shutdown. Basically, your machine shouldn't be working at all if the fan is dead. The MacBook has only one fan. I'm not sure about smcfancontrol, but iStat shows the speeds for multiple fans as the 15 and 17" MacBook Pros have two fans. If only one fan on your 13" MacBook is showing 0 RPM, that is likely the reading for the non-existent fan. When you say you went into an Apple store and did a diagnostic... do you mean that you had Apple perform the test and they came back and told you that the fan had failed?

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Answer 2

DJ_Maestro Author

Level 1

1 points

Mar 30, 2011 12:56 AM in response to JoeyR

yeah i sat right there while he actually did the diagnostics testing.... all the icons popped up and the fan was in red with an X next to it, the laptop gets extremely hot and i don't hear the fan blowing.... Well not until today, when i tapped the bottom the fan came on and then went off. My Macbook doesn't even boot past the grey screen with the apple logo anymore, it just spins and spin for how ever long it kept it there.

Okay i'm rambling now.... I'm just annoyed, cuz i brought this machine used and only had it a month.

So now it won't boot past the apple logo, i've looked on line and did all the command keys and PRAM resests nothing,
It doesn't even chime no more when its powered on, does this mean i need a new logic board

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