Re: iMac G5 won't power on
checked the power supply. both 12v outputs read 11.56. since this is a hand-me-down from someone who already replaced their computer, i don't think i'll spend any more time on it. just hate to see it go to a landfill. can't in good conscience part it out since i don't know what's wrong with it. thanks ken On Jan 3, 11:10 pm, Kris Tilford ktilfo...@cox.net wrote: On Jan 3, 2012, at 8:43 PM, faithie999 wrote: None of the caps are visibly damaged, but I know that doesn't mean that one or more aren't faulty. If none are popped, I don't think it's likely the problem. I'd look for something else. It sounds a lot like a bad power supply, which you can check with a multimeter. -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
iMac G5 won't power on
Mine won`t turn on,either. You could sell it. I`ve seen them for sale on ebay, non working. I am debating whether or not to replace capacitors. There is a history of their being defective,and very difficult to properly replace. It`s called wave soldering,I was told.As a hobby,I might try,if I have someone personally mentoring me. :-D Cheers Gene From: faithie999 faithie...@hotmail.com To: G-Group g3-5-list@googlegroups.com Sent: Wednesday, January 04, 2012 11:32 AM Subject: Re: iMac G5 won't power on checked the power supply. both 12v outputs read 11.56. since this is a hand-me-down from someone who already replaced their computer, i don't think i'll spend any more time on it. just hate to see it go to a landfill. can't in good conscience part it out since i don't know what's wrong with it. thanks ken On Jan 3, 11:10 pm, Kris Tilford ktilfo...@cox.net wrote: On Jan 3, 2012, at 8:43 PM, faithie999 wrote: None of the caps are visibly damaged, but I know that doesn't mean that one or more aren't faulty. If none are popped, I don't think it's likely the problem. I'd look for something else. It sounds a lot like a bad power supply, which you can check with a multimeter. -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.1901 / Virus Database: 2109/4722 - Release Date: 01/04/12 -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
We have a PC here that developed the issue of not powering on, and (after looking into various issues) tried replacing the caps on the motherboard. It was difficult. The newer solder seems to be high-temperature (as someone mentioned in an earlier thread); surprisingly hard to get the caps out, even harder to get the holes clear in order to put in new ones, using a 60W iron. Ordinary solder sucker didn't work; had to use combination of heat and an old dental tool to poke the old solder out without damaging the printed circuit traces. Quite a job. P.S. The darned thing still won't power on. Barry From: Gene Henley mhenl...@verizon.net Organization: Heney Health Enterprises Reply-To: g3-5-list@googlegroups.com Date: Wed, 04 Jan 2012 12:02:53 -0500 To: g3-5-list@googlegroups.com Subject: iMac G5 won't power on Mine won`t turn on,either. You could sell it. I`ve seen them for sale on ebay, non working. I am debating whether or not to replace capacitors. There is a history of their being defective,and very difficult to properly replace. It`s called wave soldering,I was told.As a hobby,I might try,if I have someone personally mentoring me. -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
bruce--i should have thanked you for the link. i found my way to badcaps.net, a very interesting site. i removed the power supply, and tested the outputs. i got 11.56v on both 12v outputs. that leads me to believe the problem is with the caps on the logic board, which there is a kit for on the above site. i'm considering whether my soldering skills are up to the task. btw, the person that gave me this kept the HD, but also kept the temperature sensor that is glued to it. will the computer boot without the temp sensor plugged in? if it won't i will try to find a pinout for that connector and make a jumper. thanks ken On Jan 2, 7:41 pm, Bruce Johnson john...@pharmacy.arizona.edu wrote: On Jan 2, 2012, at 4:03 PM, faithie999 wrote: which are the power supply caps on the logic board? there are probably 20+ caps in all on the board. Follow the links I sent, or google G5 iMac capacitor replacement. If you're kitting up to do the power supply, may as well do the whole thing, Power supply and logic board. as for the power supply board--did you replace the large caps, or just the smaller ones? Only the big can-like ones i know that any of them can be bad, but desoldering and resoldering the larger ones are probably beyond my capability. the smaller ones look doable. Actually the larger ones are easier to remove. -- Bruce Johnson Wherever you go, there you are B. Banzai, PhD -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
I found a message in a badcap.net thread that suggested changing the CMOS battery. Did so, and now a new set of symptoms. Pilot light comes on, fan at normal (low) speed, but no startup chime and no boot. Screen is black. Tried booting with install disk but SuperDrive doesn't swallow the disk. Tried a couple different ram sticks to no avail. Does this still sound like a capacitor problem or should I head down a different track? Diagnostic led's: When I plug in the power cord led1 lights as expected. After powering on led2 lights as expected. Led3 never lights. Manual suggests this is a video problem but since it doesn't appear to be booting I'm not ready to condemn the video yet. Any further ideas? Thanks On Jan 3, 11:17 am, Bruce Johnson john...@pharmacy.arizona.edu wrote: On Jan 3, 2012, at 4:42 AM, faithie999 wrote: btw, the person that gave me this kept the HD, but also kept the temperature sensor that is glued to it. will the computer boot without the temp sensor plugged in? if it won't i will try to find a pinout for that connector and make a jumper. Wow, no idea. Maybe iFixit.com will be able to help, either with info about the disassembly and drive replacement or even the part. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 3, 2012, at 12:04 PM, faithie999 wrote: I found a message in a badcap.net thread that suggested changing the CMOS battery. Did so, and now a new set of symptoms. Pilot light comes on, fan at normal (low) speed, but no startup chime and no boot. Screen is black. Tried booting with install disk but SuperDrive doesn't swallow the disk. Tried a couple different ram sticks to no avail. Does this still sound like a capacitor problem or should I head down a different track? Diagnostic led's: When I plug in the power cord led1 lights as expected. After powering on led2 lights as expected. Led3 never lights. Manual suggests this is a video problem but since it doesn't appear to be booting I'm not ready to condemn the video yet. All signs point to logic board issues with the thing. On G5 iMacs the most common logic board issue is bad caps. The system isn't even coming alive (no startup chime) Remove all the ram and see if you get the bad ram crash noise, but I'll bet you don't. At this point you'll want to consider the value of your time and parts to repair it. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
thanks. i have no use for this when/if i fix it; i gave a 20 imac G5 that we were no longer using to my sister for her kids. however, i hate to put this in a landfill! as an academic exercise, i may spring for the capacitor kit and give it a try. ken On Jan 3, 2:15 pm, Bruce Johnson john...@pharmacy.arizona.edu wrote: On Jan 3, 2012, at 12:04 PM, faithie999 wrote: I found a message in a badcap.net thread that suggested changing the CMOS battery. Did so, and now a new set of symptoms. Pilot light comes on, fan at normal (low) speed, but no startup chime and no boot. Screen is black. Tried booting with install disk but SuperDrive doesn't swallow the disk. Tried a couple different ram sticks to no avail. Does this still sound like a capacitor problem or should I head down a different track? Diagnostic led's: When I plug in the power cord led1 lights as expected. After powering on led2 lights as expected. Led3 never lights. Manual suggests this is a video problem but since it doesn't appear to be booting I'm not ready to condemn the video yet. All signs point to logic board issues with the thing. On G5 iMacs the most common logic board issue is bad caps. The system isn't even coming alive (no startup chime) Remove all the ram and see if you get the bad ram crash noise, but I'll bet you don't. At this point you'll want to consider the value of your time and parts to repair it. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 3, 2012, at 4:49 PM, faithie999 wrote: thanks. i have no use for this when/if i fix it; i gave a 20 imac G5 that we were no longer using to my sister for her kids. however, i hate to put this in a landfill! as an academic exercise, i may spring for the capacitor kit and give it a try. ken Here's another site with a wealth of information about replacing iMac G5 capacitors on the logic board as well as the power supply, plus kits are available for purchase. I've replaced caps on dozens of iMac G5 and eMac G4 logic boards, and in a dozen or so iMac G5 power supplies. I started out replacing all of them, but I've come around to where I now replace only those with bulging tops or with bulging/leaking tops or that are tilted noticeably because the bottom rubber plug has blown (rare). My success rate of revival has increased dramatically since I started replacing only the observable bad ones. This is most likely due to the fact that it's extremely difficult to remove and replace caps on iMac G5s without damaging the internal traces in the layers of the logic boards, or failing to adequately melt the high-temp solder used by Apple and thus effect a good solder bond. Even after I've succeeded in reviving some iMac G5s, I have to go back and resolder a few joints that have come loose after a number of heat up/cool down cycles. If you're a glutton for punishment, go for the recaps. But be prepared to never completely trust that iMac again. On the other hand, I've have no failures of any eMacs whose capacitors I've replaced. Jim Scott -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 3, 2012, at 6:43 PM, faithie999 wrote: None of the caps are visibly damaged, but I know that doesn't mean that one or more aren't faulty. Well, I don't know about that. At first, I bought the idea that a capacitor could be bad even if it didn't exhibit any signs of failure, i.e. leaking, bulging, tilting. But then I got to thinking about what caused the problem of bad caps for almost all of the world's electronics manufacturers who used caps from the manufacturer who stole the electrolyte recipe. The stolen recipe was missing a key ingredient: the stabilizer that prevented the electrolyte from boiling/overheating, which then caused the caps to become unstable and not be able to hold their voltage values. The worst caps even exploded, and I've seen a number of those. Just found one inside a 1 GHz Sept. 2004 eMac tonight, in fact. I also realized that the strongest recommendations to replace all caps irregardless of their visual condition came from people who were in the business of selling capacitor kits and soldering supplies. That's when I started replacing only those caps that looked bad, and suddenly my success rate climbed sharply upward. Of course, instead of replacing up to 27 caps on a board, I was replacing a half-dozen or so. That alone limited any damage -- hidden or not -- that might be done by removing caps unnecessarily. I've revisited a number of boards that have had only bad caps replaced in the last couple of years, and no more bad caps have appeared. So I've concluded that if one of the stolen-electrolyte-caps was going to go bad, it already has done so in the last 7 years or so. That doesn't mean the remaining stolen-recipe caps won't go bad in the future. Look at all the G5 iMacs that worked fine during and even after the official Apple bad-cap replacement program, then failed. But I suspect any original 2004-2005 or so stolen-recipe cap that's still in use would have failed by now if it were going to do so. Still, the main difficulty in replacing caps as a hobbyist -- advanced or otherwise -- is the lack of a proper professional-grade solder work station. It is godawful hard -- impossible I wager -- to get the no-lead high-temp solder Apple used in G5 iMacs to melt adequately during cap removal and replacement using consumer-grade soldering equipment. This causes iffy solder joints inside the holes, even if the solder adheres to the pads on the surface. HTH, Jim Scott -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 3, 2012, at 8:43 PM, faithie999 wrote: None of the caps are visibly damaged, but I know that doesn't mean that one or more aren't faulty. If none are popped, I don't think it's likely the problem. I'd look for something else. It sounds a lot like a bad power supply, which you can check with a multimeter. -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
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=safarirls=enq=capacitor+replacement+G5+iMacie=UTF-8oe=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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
which are the power supply caps on the logic board? there are probably 20+ caps in all on the board. as for the power supply board--did you replace the large caps, or just the smaller ones? i know that any of them can be bad, but desoldering and resoldering the larger ones are probably beyond my capability. the smaller ones look doable. none of the caps, either on the logic board or the power supply, are bulging or otherwise look damaged, but i know they can be damaged internally without any external symptoms thanks ken On Jan 2, 3:15 pm, Clark Martin cm...@sonic.net wrote: 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=safarirls=enq=capacitor+replace... 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 2, 2012, at 4:03 PM, faithie999 wrote: which are the power supply caps on the logic board? there are probably 20+ caps in all on the board. Follow the links I sent, or google G5 iMac capacitor replacement. If you're kitting up to do the power supply, may as well do the whole thing, Power supply and logic board. as for the power supply board--did you replace the large caps, or just the smaller ones? Only the big can-like ones i know that any of them can be bad, but desoldering and resoldering the larger ones are probably beyond my capability. the smaller ones look doable. Actually the larger ones are easier to remove. -- Bruce Johnson Wherever you go, there you are B. Banzai, PhD -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 2, 2012, at 7:41 PM, Bruce Johnson wrote: Follow the links I sent, or google G5 iMac capacitor replacement. If you're kitting up to do the power supply, may as well do the whole thing, Power supply and logic board. Is this valid for a mid-2005 PPC dual core G5 tower? or even a 2009 macbook pro -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 2, 2012, at 3:03 PM, faithie999 wrote: which are the power supply caps on the logic board? there are probably 20+ caps in all on the board. Roughly in the center bottom of the logic board are several groups of caps (1000uF, 16V IIRC), about 10-12 caps in a group. I think there are about 4 groups. as for the power supply board--did you replace the large caps, or just the smaller ones? I replaced the power supply. I started out replacing the caps but ran into a snag but I don't remember what it was. The power supply is trickier as the caps are stuffed in tighter and glued together. And they are often surrounded by other components that you don't want to remove. i know that any of them can be bad, but desoldering and resoldering the larger ones are probably beyond my capability. the smaller ones look doable. none of the caps, either on the logic board or the power supply, are bulging or otherwise look damaged, but i know they can be damaged internally without any external symptoms -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
On Jan 2, 2012, at 8:20 PM, JohnV wrote: On Jan 2, 2012, at 7:41 PM, Bruce Johnson wrote: Follow the links I sent, or google G5 iMac capacitor replacement. If you're kitting up to do the power supply, may as well do the whole thing, Power supply and logic board. Is this valid for a mid-2005 PPC dual core G5 tower? or even a 2009 macbook pro No. Neither. See: http://en.wikipedia.org/wiki/Capacitor_plague -- Bruce Johnson Wherever you go, there you are B. Banzai, PhD -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
thanks--i'll take it apart and have a look ken On Dec 31 2011, 6:45 pm, Bruce Johnson john...@pharmacy.arizona.edu 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=safarirls=enq=capacitor+replace... Plenty of instructions for the DIY-er and services to do it for you. -- Bruce Johnson Wherever you go, there you are B. Banzai, PhD -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
iMac G5 won't power on
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. any ideas on how to troubleshoot this? i did some googling, and there is a link to an apple support doc for this problem for a non-isight model (describes taking rear cover off, which clearly can't be done with the isight model) but nothing other than uninformed speculation on message boards about the isight G5. i have dissassembled it and looked for power supply diagnostic LED's but if they are there they're not obvious. thanks in advance for any ideas ken -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: iMac G5 won't power on
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=safarirls=enq=capacitor+replacement+G5+iMacie=UTF-8oe=UTF-8 Plenty of instructions for the DIY-er and services to do it for you. -- Bruce Johnson Wherever you go, there you are B. Banzai, PhD -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
