On Dec 31, 2011, at 3:45 PM, Bruce Johnson wrote: > > On Dec 31, 2011, at 2:45 PM, faithie999 wrote: > >> a friend gave me a dead iMac 17" G5 iSight. the symptom is: >> when i push the power button, the pilot light comes on for about a >> second, then the fan comes on at full speed, then about a second later >> the pilot light and the fan turn off. the screen never lights up and >> there is no startup chime. i've tried resetting SMU by unplugging, >> then replugging while depressing the power button, then releasing and >> re-pushing the power button. same behavior as described above. > > > Almost certainly, given that this is a G5 iMac, it's bad caps in the power > supply and/or logic board. > > <http://www.google.com/search?client=safari&rls=en&q=capacitor+replacement+G5+iMac&ie=UTF-8&oe=UTF-8> > > Plenty of instructions for the DIY-er and services to do it for you.
I received a 20" G5 (no iSight) for free because it had the same or similar symptoms. I replaced all the power supply caps on the logic board and replaced the power supply. All is well with it now. Replacing the caps isn't simple as they use lead free solder which has a higher melting point. Unless you are skilled at soldering your best bet is to find a service to change them. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-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] For more options, visit this group at http://groups.google.com/group/g3-5-list
