It is a 1.25ghz eMac, and I recently upgraded the memory to a full gig. Are the capacitors easy to get to, and can they be changed DIY?
On Feb 12, 10:19 am, Jim Scott <jesco...@gmail.com> wrote: > > On Feb 12, 7:12 am, Opinioneditor <opinionedito...@gmail.com> wrote: > >> I've had a few Adobe programs start crashing on my eMac after a couple > >> years of normal use. The crash report says "Read Only Memory > >> Exception" and "Instruction=82b70000" I've reinstalled the software, > >> nuked preference files, nuked the font caches, checked disk > >> permissions, ran Apple Hardware Test for 14 hours straight and even > >> replaced the OS (Tiger 10.4.11) as well as zapped the PRAM. I still > >> get the problem. However, I can transfer the software to a thumb drive > >> and run it on another computer with no problem, so it seems to be > >> something with the Mac. Does anyone know if this is a fixable problem, > >> or is my eMac starting to go senile? > > On Feb 12, 2011, at 4:32 AM, skinnie wrote: > > > 1)Download onyx,run the automation process. > > 2)IF the problem still there try the memory with AHT that came with > > your computer. > > 2)If AHT doesn't report any error,test each dimm,in the available > > slots and then all of them in different slots.You want to pass a > > rubber in the memory connections. > > 3)If everything is ok,maybe you have some bad capacitors in your emac > > or something. > > I've worked on a couple of eMacs in local schools with similar problems. I've > run Apple Hardware Tests, Apple Service Diagnostic tests, reinstalled OS X, > cleaned out all the dust bunnies, swapped RAM sticks, run Memtest overnight, > run DiskWarrior, yada yada yada. Nothing fixes the problem, but nothing is > found to be wrong, except the crash log points to memory problems. > > Found a handful of bad capacitors on one eMac's logic board (1.25 GHz). It > was really acting up, doing all sorts of strange, non-repeated things. > Replaced all the caps on the logic board, and the software problem went away. > The bad cap problem tends to affect 1.25 GHz eMacs the most, which coincides > with bad capacitor problems reported by other electronics manufacturers in > the 2004-2005 time frame. You don't say, but my assumption is that you've got > a 1.25 GHz eMac. I've not seen bad cap problems with 700 MHz-1 GHz USB 1.1 > eMacs, but I have seen the problem in USB 2.0 1 GHz and 1.25 GHz eMacs. I've > only dealt with a handful of 1.42 GHz eMacs, and they didn't have any > capacitor problems -- at the time. Trouble is, caps can be bad and not show > any visible sign of failure, such as leaking, bulging tops, tilted to one > side from bottom leaks, etc. > > Capacitors on eMac logic boards are relatively easy to replace and there are > only a dozen or so to replace. Most of the work is in disassembling the beast > enough to extract the logic board. > > So, if all else fails, try the capacitor replacement solution. > > 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
