My imac keeps turning itself off

[needthephone]

My imac ( a white plastic 17 inch model) has started to turn itself off. I have to press the on/off button to restart it all the time.

Anyone have any ideas why it's doing this?

Thanks

 

[annk]

Something to do with the electrical current? Do you live in an area with frequent short power problems (lights flickering for a second or two), or could it be an issue with your fuse box?

 

[mbestel]

Heat?

Hi,

Try checking the console utility and look at the logs to see whether there are any messages relating to the turn-offs.

Sometimes one of the temperature sensors gets a bit dodgy.

Also, make sure that the air intakes at the bottom of the case aren't blocked with dust / cat hair / etc.

Hope this helps.

Cheers,

Mark