Re: IIcx Powers on, but no Signs of Life
> On 12 Feb, 2017, at 05:25, Wesley Furrwrote: > > What are the odds that one of the axial electrolytic capacitors is causing > this problem? I have not replaced those yet. Frankly the axial electrolytics are more likely to go wrong than the surface-mount ones. Fortunately, replacing them should also be easier. - Jonathan Morton -- -- - You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to vintage-macs@googlegroups.com To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to vintage-macs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
IIcx Powers on, but no Signs of Life
I have a IIcx whose motherboard got destroyed by a leaking battery. I acquired a motherboard for it that was of unknown condition. Clearly needed capacitors, so I removed them soon after receiving it, but then haven't gotten around to working on it since then. I think I posted some questions here a while back about a bad trace. I managed to patch that back up and the volt meter indicates it has continuity through that point now, so I think that is good. One other trace looks questionable, but doesn't look too bad...and I'm having trouble figuring out where to put the meter to test it out to see for sure. I then replaced all the surface mount capacitors and tried it out. With only power connected, I can push the button on the back and it powers up, but I do not get a chime. Tried connecting a VGA monitor to the 8-24-GC video card via an adapter, but still nothing. If I press the reset button on the front, I can hear a slight noise out of the speaker like it is resetting. Tried the power supply out of a Quadra 700 that I have sitting here (that doesn't work either, I forget the symptoms now), but it behaves the same way. Tried pulling half the ram, swapped it with the other half, no dice either way. Unplugged all drives...everything I could think of to try... Video card chips get warm, CPU does not seem to be getting warm. It does not have a PRAM battery installed, but I understand that is not required for the IIcx to function? What are the odds that one of the axial electrolytic capacitors is causing this problem? I have not replaced those yet. I hesitate to throw any more time and money at it unless I'm fairly confident I can get it going... Any other thoughts? Thanks, Wesley -- -- - You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to vintage-macs@googlegroups.com To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to vintage-macs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Mac iici. In great working condition
Concerning batteries, the first thing I do with a newly acquired Mac is removing the Lithium-batteries when I do not use the Mac on a regular basis. I too bought some Mac II and Macintosh Plus, SE, SE/30 with completely destroyed main boards due to leaked or exploded batteries. The other point is the risk of fire especially with the larger LiIon’s of Laptops (MacBooks …) I keep these in a 40 to 60% capacity range and and store them outside the Laptop if possible. Am 10.02.2017 um 19:54 schrieb Luke Brown: > Thanks seams to be a common problem.. > > Thanks ;) > > > On Fri, Feb 10, 2017 at 10:38 AM Wesley Furr wrote: > I had a IIci and a IIcx like that...then found them eaten alive by the > stupid batteries... :-( > > Wesley > > > On Fri, February 10, 2017 1:02 pm, NODEraser wrote: > > I may have one lurking in the basement; I have a pile of various Mac > > IIs but it's been a few years since I've tried starting any of them > > up. > > > -- > -- > - > You received this message because you are a member of the Vintage Macs group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to vintage-macs@googlegroups.com > To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to vintage-macs+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > > -- > -- > - > You received this message because you are a member of the Vintage Macs group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to vintage-macs@googlegroups.com > To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to vintage-macs+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- -- - You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to vintage-macs@googlegroups.com To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to vintage-macs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.