Hehe, When I had this panic, it was because I had forgot I had set one corner to black the screen out ;o)
However, I am sure you have already checked this? Cheers Neil -- Neil R. Houghton Albany, Western Australia Tel: +61 8 9841 6063 Email: n...@possumology.com on 30/11/11 12:12 PM, S Beach at sbscr...@gmail.com wrote: > Hi All > > A fiend of mine has a problem with a 27" iMac (bought early 2009). > Occasionally the screen goes black but everything seems to keep going in > the background (music keeps playing etc). > If he turns it off (using the power button) it restarts OK then the screen > goes black again. If he turns off and leaves it for a while it starts OK & > doesn't go black for a while. > I suspect it is a heat problem with either the screen itself or the > qraphics card. I have seen some discussion on various websites (including > the apple support forums) of heat problems with these iMacs but the > symptoms don't seem quite the same. > I noticed what I assume is a slotted vent hole on the back of the iMac > (lower centre) with a bit of dust around it but as it is obscured by the > stand I couldn't get a proper look at it. > > Does anyone have any experience or knowledge of: > > 1. iMacs showing similar symptoms and the likely cause - is this a known > issue > 2. How to check for, and clean out dust > I often have to clean dust out of various computers (including my Mac > Pro) by blowing or vacuuming but it is best to determine where the dust is > built up so you draw the dust out of the build up rather than forcing it > further in. And of course these iMacs are not easy to get into. > > It is still under apple care (just) and he is hoping to make use of that > but is not yet sure if he can find the original receipt. > > Regards > > Shayne > -- 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> -- 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>
