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MacBook Pro 17 inch 2010 random shut offs

A

Andretti

macrumors member
Original poster
Feb 1, 2012
35
3
Hi, we have issues with our MacBook Pro 17 inch 2010 (last model without thunderbolt).

We were experiencing sudden and random unexpected drop outs using he battery, but not with connection to mains.

Replacing the battery didn't solve the issue. PRAM/NVRAM reset also not resolving the issue.

Any ideas or tips very welcome! Thanks.

Edit: I discovered that the right fan isn't working. Could this be cause? Meanwhile I am sure that
dropp outs do not happen while connected to mains
 
Last edited:
You can try resetting the SMC too, but I doubt that will fix it. Could be a cable issue.
 
I was thinking of the one to the battery, but I suppose any involved in the power supply could be implicated. That's assuming it's a power issue.
 
I discovered that the right fan isn't working. Could this be cause? Meanwhile I am sure that
dropp outs do not happen while connected to mains
 
Check your logs and see if there is an error being reported and then power off signal being sent.

If your fan isn't turning it could be shorted and and feeding the juice straight back to the source instead of using it to spin the blades and this is causing an immediate shutdown or something.

Also check and see if the warning logo is next to your battery in the menu thing that lets you check battery level. The warning just showed up on my 2008 MBP last weekend. Apple doesn't sell the battery I need anymore. :-(
 
PBG4 Dude said:
Check your logs and see if there is an error being reported and then power off signal being sent.

If your fan isn't turning it could be shorted and and feeding the juice straight back to the source instead of using it to spin the blades and this is causing an immediate shutdown or something.

Also check and see if the warning logo is next to your battery in the menu thing that lets you check battery level. The warning just showed up on my 2008 MBP last weekend. Apple doesn't sell the battery I need anymore. :-(
Click to expand...

Thanks!
The fan shorting could be it (I hope). we exchanged left and right fan just for testing and for sure the right fan is broken. I ordered a new one. Battery tests fine with Coconut and no warning. (original battery did give warning)
 
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PBG4 Dude said:
Check your logs and see if there is an error being reported and then power off signal being sent:-(
Click to expand...
Could you point me to the specific log I need to look at? There is a lot of data to be viewed in "Console". Thanks!
 
I think it might be the system.log file. Other than that I'm guessing your favorite internet search engine of choice is going to be more help than I could be.
 
PBG4 Dude said:
I think it might be the system.log file. Other than that I'm guessing your favorite internet search engine of choice is going to be more help than I could be.
Click to expand...
Thanks. should have thought of that myself :-0
 
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