Re: Startup problem iMac power PC
Hi Merv, What were your results please; is the problem fixed? If you haven't recently cleaned the dust from all of the intake and exhaust vents, I would suggest you do. Turn the iMac OFF and disconnect power cable anything attached to the iMac. Find the air vents, there is one along the top, one along the bottom, and in some models there is a circular one in back. Use a vacuum cleaner to get the worst off, then use compressed air to blow the rest out. Kind Regards, Ronni On 17 Nov 2013, at 6:16 am, Ronda Brown ro...@mac.com wrote: Hi Merv, Try Reset SMU Reset PRAM NVRAM Reset SMU of your iMac Turn off your iMac Unplug all cables from the computer, including the power cord. Wait 10-50 seconds. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. Let go of the power button. Then turn on your Mac again Reset PRAM and NVRAM Shut down your iMac Locate the following keys on the keyboard: Command, Option, P, and R. Turn on the computer. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. Hold the keys down until the computer restarts and you hear the startup sound for three times. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- 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
Re: Startup problem iMac power PC
Sorry for the delay in responding. Did as you suggested Ronni, but no change - including the vacuuming and the use of my puffer for removing dust from photos. A day or so later one of my sons, the only one immersed in Macs, called by and went through the procedures as well. He agreed with you Ronni, and Tim, that it was a capacitor problem. He had had a similar experience with one of his own iMacs, and although the capacitors had been replaced by an experienced technician, the problem did not go away. A new power box was the only solution. So, my wife is considering her options - will keep in touch - but don't hold your breathe. Incidentally, her machine has firewire 400 only. Using SuperDuper I had been making bootable backups to an external disk that only had 800firwire sockets. I used a cable adapted for this situation. I made one desperate attempt to install one of bootable copies back on the 'injured' iMac but it did not recognise the back-up. Maybe I did something wrong or was trying the impossible. Regards to all Merv On 24/11/13 8:16 AM, Ronda Brown wrote: Hi Merv, What were your results please; is the problem fixed? If you haven't recently cleaned the dust from all of the intake and exhaust vents, I would suggest you do. Turn the iMac OFF and disconnect power cable anything attached to the iMac. Find the air vents, there is one along the top, one along the bottom, and in some models there is a circular one in back. Use a vacuum cleaner to get the worst off, then use compressed air to blow the rest out. Kind Regards, Ronni On 17 Nov 2013, at 6:16 am, Ronda Brown ro...@mac.com mailto:ro...@mac.com wrote: Hi Merv, Try Reset SMU Reset PRAM NVRAM _*Reset SMU of your iMac*_ 1. Turn off your iMac 2. Unplug all cables from the computer, including the power cord. 3. Wait 10-50 seconds. 4. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. 5. Let go of the power button. 6. Then turn on your Mac again _*Reset PRAM and NVRAM*_ 1. Shut down your iMac 2. Locate the following keys on the keyboard: Command, Option, P, and R. 3. Turn on the computer. 4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. 5. Hold the keys down until the computer restarts and you hear the startup sound for three times. 6. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au mailto:m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- 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 whole psychology of modern disquiet is linked with the sudden confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of Man') -- 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
Re: Startup problem iMac power PC
Merv, If you have the capacity, removing the back cover of the iMac, if I recall correctly, exposes the main board. The capacitors are small round devices about 10mm across and stand up from the board, not laid across it like a resistor normally is. They should be flat across the top of them, not bulging up, or leaking. Only one needs to be faulty to muck up the machine. And typically once one component is overloaded it can pass extra load onto another which then fails. A photo of the offending components is at http://www.instructables.com/id/Imac-G5-DIY-capacitors-repair/ I am NOT necessarily advocating the repair, just showing an image of what you are looking for. They don't need to be spitting their internals, just a bulge on top signifies they are faulty. Obviously take a great deal of care when looking inside these machines. Remove all power cords. A capacitor's job is to store electricity, and they CAN store mains power. Not much generally, but nevertheless, poke around inside your computers components with great care. Hope this helps. I've separated out my components so now have a Mac Mini which can be upgraded separately to the monitor - which can be upgraded separately. Having said that, all in one units seem to be pretty reliable. Tim On 24 Nov 2013, at 10:04 am, Merv Bond m...@iinet.net.au wrote: Sorry for the delay in responding. Did as you suggested Ronni, but no change - including the vacuuming and the use of my puffer for removing dust from photos. A day or so later one of my sons, the only one immersed in Macs, called by and went through the procedures as well. He agreed with you Ronni, and Tim, that it was a capacitor problem. He had had a similar experience with one of his own iMacs, and although the capacitors had been replaced by an experienced technician, the problem did not go away. A new power box was the only solution. So, my wife is considering her options - will keep in touch - but don't hold your breathe. Incidentally, her machine has firewire 400 only. Using SuperDuper I had been making bootable backups to an external disk that only had 800firwire sockets. I used a cable adapted for this situation. I made one desperate attempt to install one of bootable copies back on the 'injured' iMac but it did not recognise the back-up. Maybe I did something wrong or was trying the impossible. Regards to all Merv On 24/11/13 8:16 AM, Ronda Brown wrote: Hi Merv, What were your results please; is the problem fixed? If you haven't recently cleaned the dust from all of the intake and exhaust vents, I would suggest you do. Turn the iMac OFF and disconnect power cable anything attached to the iMac. Find the air vents, there is one along the top, one along the bottom, and in some models there is a circular one in back. Use a vacuum cleaner to get the worst off, then use compressed air to blow the rest out. Kind Regards, Ronni On 17 Nov 2013, at 6:16 am, Ronda Brown ro...@mac.com mailto:ro...@mac.com wrote: Hi Merv, Try Reset SMU Reset PRAM NVRAM _*Reset SMU of your iMac*_ 1. Turn off your iMac 2. Unplug all cables from the computer, including the power cord. 3. Wait 10-50 seconds. 4. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. 5. Let go of the power button. 6. Then turn on your Mac again _*Reset PRAM and NVRAM*_ 1. Shut down your iMac 2. Locate the following keys on the keyboard: Command, Option, P, and R. 3. Turn on the computer. 4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. 5. Hold the keys down until the computer restarts and you hear the startup sound for three times. 6. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au mailto:m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- 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 -
Re: Startup problem iMac power PC
Hi Merv, Yes, thought it would be capacitors or Power box problem. The older iMacs were well known to have this issue. Hey Merv...the iMac is a 2004 model isn't it time for a new iMac for your wife? ;-) Incidentally, her machine has firewire 400 only. Using SuperDuper I had been making bootable backups to an external disk that only had 800firwire sockets. I used a cable adapted for this situation. I made one desperate attempt to install one of bootable copies back on the 'injured' iMac but it did not recognise the back-up. Maybe I did something wrong or was trying the impossible. As long as the bootable external FW800 disk partition Volume Scheme was formatted: Apple Partition Map. (This is the only partition scheme that PowerPC-based Macs can start up from). And you used a FW400 to FW800 adapter cable -you should have been able to connect the bootable drive to the iMac and then do a Restore from SuperDuper! Backup. If you require details how to Restore from a SuperDuper! Backup post back and I will give details. Kind Regards, Ronni On 24 Nov 2013, at 10:04 am, Merv Bond m...@iinet.net.au wrote: Sorry for the delay in responding. Did as you suggested Ronni, but no change - including the vacuuming and the use of my puffer for removing dust from photos. A day or so later one of my sons, the only one immersed in Macs, called by and went through the procedures as well. He agreed with you Ronni, and Tim, that it was a capacitor problem. He had had a similar experience with one of his own iMacs, and although the capacitors had been replaced by an experienced technician, the problem did not go away. A new power box was the only solution. So, my wife is considering her options - will keep in touch - but don't hold your breathe. Incidentally, her machine has firewire 400 only. Using SuperDuper I had been making bootable backups to an external disk that only had 800firwire sockets. I used a cable adapted for this situation. I made one desperate attempt to install one of bootable copies back on the 'injured' iMac but it did not recognise the back-up. Maybe I did something wrong or was trying the impossible. Regards to all Merv On 24/11/13 8:16 AM, Ronda Brown wrote: Hi Merv, What were your results please; is the problem fixed? If you haven't recently cleaned the dust from all of the intake and exhaust vents, I would suggest you do. Turn the iMac OFF and disconnect power cable anything attached to the iMac. Find the air vents, there is one along the top, one along the bottom, and in some models there is a circular one in back. Use a vacuum cleaner to get the worst off, then use compressed air to blow the rest out. Kind Regards, Ronni On 17 Nov 2013, at 6:16 am, Ronda Brown ro...@mac.com mailto:ro...@mac.com wrote: Hi Merv, Try Reset SMU Reset PRAM NVRAM _*Reset SMU of your iMac*_ 1. Turn off your iMac 2. Unplug all cables from the computer, including the power cord. 3. Wait 10-50 seconds. 4. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. 5. Let go of the power button. 6. Then turn on your Mac again _*Reset PRAM and NVRAM*_ 1. Shut down your iMac 2. Locate the following keys on the keyboard: Command, Option, P, and R. 3. Turn on the computer. 4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. 5. Hold the keys down until the computer restarts and you hear the startup sound for three times. 6. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au mailto:m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- 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
Re: Startup problem iMac power PC
Useful to know. I'll save this information. Stuart Breden PO Box 132 Kalamunda WA 6926 Ph: (08) 9257 1577 Mbl: 0417 053 266 Please consider the environment before printing this email On 17/11/2013, at 6:16 AM, Ronda Brown wrote: Hi Merv, Try Reset SMU Reset PRAM NVRAM Reset SMU of your iMac Turn off your iMac Unplug all cables from the computer, including the power cord. Wait 10-50 seconds. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. Let go of the power button. Then turn on your Mac again Reset PRAM and NVRAM Shut down your iMac Locate the following keys on the keyboard: Command, Option, P, and R. Turn on the computer. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. Hold the keys down until the computer restarts and you hear the startup sound for three times. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- The whole psychology of modern disquiet is linked with the sudden confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of Man') -- 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
Re: Startup problem iMac power PC
Hi Merv, Try Reset SMU Reset PRAM NVRAM Reset SMU of your iMac Turn off your iMac Unplug all cables from the computer, including the power cord. Wait 10-50 seconds. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. Let go of the power button. Then turn on your Mac again Reset PRAM and NVRAM Shut down your iMac Locate the following keys on the keyboard: Command, Option, P, and R. Turn on the computer. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound. Hold the keys down until the computer restarts and you hear the startup sound for three times. Release the keys. If this does not fix, you might have problem with the capacitors on the logic board. Cheers, Ronni Sent from Ronni's iPad4 On 16 Nov 2013, at 9:49 pm, Merv Bond m...@iinet.net.au wrote: My wife is running an iMac OSX 1.8 GHz G5 power PC. She has used 69.42 GB out of 465 GB so has plenty of space. This morning while downloading a Fishpond email the machine froze. Attempts at restarting the machine failed: switching off at computer, switching off at power supply. Eventually tried a Safe Boot - success!! Ran Disk Utility - nothing serious that I could see, but I am not a code expert. Shut down and reopended. No success. Shut down and used Safe Mode startup. Noted that with Saft Mode Startup, just before the Home page appears the fans startup but stop as home page is arrived at. Advice on how to get full facilities back again appreciated. Merv -- The whole psychology of modern disquiet is linked with the sudden confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of Man') -- 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
Re: Startup problem iMac power PC
On 17/11/2013, at 6:16, Ronda Brown ro...@mac.com wrote: If this does not fix, you might have problem with the capacitors on the logic board. This is what got mine too. It might be some other transient glitch, but bulging capacitors are a known problem on some of the older iMacs. If/when it starts up, make sure you have an excellent backup in case you need it for a new machine. Having fresh backups is something that been drilled into us - with good reason! Tim -- 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
