Hi Paul, You could try Resetting the SMC (System Management Contoller)
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve • Shut down the computer. • Unplug the computer's power cord. • Wait fifteen seconds. • Attach the computer's power cord. • Wait five seconds, then press the power button to turn on the computer. <http://support.apple.com/kb/HT3964> Cheers, Ronni 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" 2.3GHz / 8GB / 750GB @ 7200rpm HD OS X 10.8.2 Mountain Lion Windows 7 Ultimate (under sufferance) On 22/10/2012, at 4:35 PM, Paul Willemse <p...@thelink.to> wrote: > Hi Ronni, > > I tried that, even used a known good power cord (our plugs here are fused), > no joy. > > Regards, > > Paul > > > On 22 Oct, 2012, at 12:15 :50, Ronda Brown <ro...@mac.com> wrote: > >> Hi Paul, >> >> Have you tried another power point, just to eliminate it is the power outlet? >> >> Cheers, >> Ronni >> Sent from Ronni's iPad >> >> On 22/10/2012, at 10:42 AM, Paul Willemse <p...@thelink.to> wrote: >> >>> Hi All, >>> >>> Owing to some additional electrical supply being installed in my house I >>> needed to power down my computers. All shut down properly, no indication of >>> any problem. >>> >>> After the installation my older Mac Pro (about 6 years old) refused to >>> restart or even try. The light above the power on button does not come on, >>> nothing happens at all. >>> >>> Is there a battery or some other component that could cause this? >>> >>> Grateful for any assistance anyone can give. >>> >>> Regards, >>> >>> Paul -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>