Re: Quicksilver hardware problems
At 11:38 AM -0700 8/16/2009, gsacks wrote: On Aug 16, 9:33 am, Dan dantear...@gmail.com wrote: At 9:35 PM -0700 8/15/2009, gsacks wrote: 733 mhz Quicksilver bad RAM and a bad hard drive Both were bad?! Yes, one stick of memory was bad (as per memtest) and the hard drive had errors that I couldn't correct (I don't have any 3rd party software for this, and I had spare drives anyway). Couldn't bad memory cause disk problems? While it's possible, I guess, that corrupted data from a bad stick of memory could be written to a HD, thus corrupting the file system thereon There is no way a bad memory stick can physically damage a HD and vice versa. for a couple of months. After that it wouldn't start up at all -- the light on the switch comes on and the fans spin for a few seconds, then nothing. I checked the voltages on the power supply and they seem fine. From various sources on the web, I surmised that either the logic board or the processor was dead. Fortunately, I have a working QS 2002 with an 800 mhz processor. I swapped processors, but then neither computer worked. The original non-working one behaved the same as before. The QS 2002 with the swapped processor started with no chime and no video. There's nothing wrong with the 800 mhz processor -- I put it back in the QS 2002 and it works fine. I'm thinking that both the logic board and the processor are bad. How likely is this? Any other suggestions for diagnosing the problem(s)? Have you replaced the PRAM battery? I didn't replace it, but it checks out OK on a voltmeter. Testing with a voltmeter is insufficient - that doesn't measure the power availble under load. Replace it with a new one. If the machine doesn't bong after doing so, then disconnect things - simplify the system. Remove all extra cards, all memory, disconnect the HD(s). With the memory missing, you should at least get multiple beeps, the indication from the self-test that it can't find the memory. If that doesn't work, try reseating the processor. If that doesn't work, the problem could be the PS. - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth. --~--~-~--~~~---~--~~ You received this message because you are subscribed Low End Mac's G3-5 List, 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 To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~--~~~~--~~--~--~---
Re: Quicksilver hardware problems
At 9:35 PM -0700 8/15/2009, gsacks wrote: 733 mhz Quicksilver bad RAM and a bad hard drive Both were bad?! so I replaced them and it worked for a couple of months. After that it wouldn't start up at all -- the light on the switch comes on and the fans spin for a few seconds, then nothing. I checked the voltages on the power supply and they seem fine. From various sources on the web, I surmised that either the logic board or the processor was dead. Fortunately, I have a working QS 2002 with an 800 mhz processor. I swapped processors, but then neither computer worked. The original non-working one behaved the same as before. The QS 2002 with the swapped processor started with no chime and no video. There's nothing wrong with the 800 mhz processor -- I put it back in the QS 2002 and it works fine. I'm thinking that both the logic board and the processor are bad. How likely is this? Any other suggestions for diagnosing the problem(s)? Have you replaced the PRAM battery? While working on these machines, were you properly grounded? When you swapped the processors, did you hit the CUDA button ONCE (reset the power manager)? - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth. --~--~-~--~~~---~--~~ You received this message because you are subscribed Low End Mac's G3-5 List, 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 To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~--~~~~--~~--~--~---
Re: Quicksilver hardware problems
On Aug 16, 9:33 am, Dan dantear...@gmail.com wrote: At 9:35 PM -0700 8/15/2009, gsacks wrote: 733 mhz Quicksilver bad RAM and a bad hard drive Both were bad?! Yes, one stick of memory was bad (as per memtest) and the hard drive had errors that I couldn't correct (I don't have any 3rd party software for this, and I had spare drives anyway). Couldn't bad memory cause disk problems? so I replaced them and it worked for a couple of months. After that it wouldn't start up at all -- the light on the switch comes on and the fans spin for a few seconds, then nothing. I checked the voltages on the power supply and they seem fine. From various sources on the web, I surmised that either the logic board or the processor was dead. Fortunately, I have a working QS 2002 with an 800 mhz processor. I swapped processors, but then neither computer worked. The original non-working one behaved the same as before. The QS 2002 with the swapped processor started with no chime and no video. There's nothing wrong with the 800 mhz processor -- I put it back in the QS 2002 and it works fine. I'm thinking that both the logic board and the processor are bad. How likely is this? Any other suggestions for diagnosing the problem(s)? Have you replaced the PRAM battery? I didn't replace it, but it checks out OK on a voltmeter. While working on these machines, were you properly grounded? No, but it's so humid I'm not worried about static. When you swapped the processors, did you hit the CUDA button ONCE (reset the power manager Yes (though I understand it's called the PMU button in G4's). - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth. --~--~-~--~~~---~--~~ You received this message because you are subscribed Low End Mac's G3-5 List, 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 To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~--~~~~--~~--~--~---
Re: Quicksilver hardware problems
gsacks wrote: On Aug 16, 9:33 am, Dan dantear...@gmail.com wrote: At 9:35 PM -0700 8/15/2009, gsacks wrote: 733 mhz Quicksilver bad RAM and a bad hard drive Both were bad?! Yes, one stick of memory was bad (as per memtest) and the hard drive had errors that I couldn't correct (I don't have any 3rd party software for this, and I had spare drives anyway). Couldn't bad memory cause disk problems? Absolutely. I had once had a DA with a bad RAM stick and it wreaked havoc on 2 different HD's. so I replaced them and it worked for a couple of months. After that it wouldn't start up at all -- the light on the switch comes on and the fans spin for a few seconds, then nothing. I checked the voltages on the power supply and they seem fine. From various sources on the web, I surmised that either the logic board or the processor was dead. Fortunately, I have a working QS 2002 with an 800 mhz processor. I swapped processors, but then neither computer worked. The original non-working one behaved the same as before. The QS 2002 with the swapped processor started with no chime and no video. There's nothing wrong with the 800 mhz processor -- I put it back in the QS 2002 and it works fine. I'm thinking that both the logic board and the processor are bad. How likely is this? Any other suggestions for diagnosing the problem(s)? Have you replaced the PRAM battery? I didn't replace it, but it checks out OK on a voltmeter. No load voltage readings can be deceiving. Might try a new one or known good one if you have it available. While working on these machines, were you properly grounded? No, but it's so humid I'm not worried about static. When you swapped the processors, did you hit the CUDA button ONCE (reset the power manager Yes (though I understand it's called the PMU button in G4's). If you are talking about the button on the front next to the reset button it's not the same thing. The CUDA button is on the motherboard itself. - Dan. Just a message from Doug... --~--~-~--~~~---~--~~ You received this message because you are subscribed Low End Mac's G3-5 List, 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 To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~--~~~~--~~--~--~---
