On Nov 5, 2010, at 4:56 PM, Jean-Claude Touzin wrote: > Ref. > OS 10.5.8 > Name iMac G5 Model PowerMac8,1 Processor PowerPC G5 (3.0) > Speed 1.8 GHz CPU 1 Cache 512 Ko RAM 1 Go > Bus speed 600 MHz ROM version 5.2.2f4 > UUID 00000000-0000-1000-8000-000D93B9ABC2 > > Hi, > One of my friend with the iMac above is having lots of trouble to start his > machine first time in the morning. > It seems that unplugging from the wall and plugging back, then pushing the > start button in the back many times is the only way to go. This is a > haphazard process meaning that it can start after a few tries or after many. > Once it has start in the morning, restarting for the rest of the day is OK. > Only other problem on this iMac was trouble to awake after sleep. My friend > disabled the sleep function as short cut solution. > Can this startup problem caused by an hair crack somewhere that is wider when > cold? > Waiting for any help you can provide, > JC > PS On my suggestion, the iMac has been cleaned up with ONYX, because it was > slow has molasse. It is now OK. > Also I make him try the Command-Option-P-R incantation to no avail. If you > need more info just ask. But pardon my FrenchGlish.
The startup problem sounds very much as if it's caused by a dying/dead CR2032 clock battery which either is not keeping parameter items in memory, or is corrupting PRAM. Replace the current battery with a new one and I'll bet the startup problems go away. The clue is that once the iMac starts successfully "restarting for the rest of the day is OK" because the PRAM is maintained by house electricity. Finally, if your friend is unplugging his iMac or otherwise disconnecting it from the electrical outlet over night, the iMac then looks to the battery to maintain PRAM, which it apparently cannot do. HTH, Jim Scott -- You received this message because you are a member of the iMac Group, a group for those using Apple iMacs and eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/imaclist
