You could certainly note the burn points, clean the board, and trying repairing some of the traces with a conductive ink pen (if it worked, you'd want to coat it in something resistant to the environment, non- conductive, and possible adhesive to the board.You should search around the web for a schematic first though. If it's somewhat broken, and not completely destroyed, you might be able to get some insight on the exact nature of the problem (i.e. what's actually being affected) or even fix it, and worst case you can just throw the board out/ salvage any working components.
On Nov 4, 3:45 am, "Nico Vanden Eynde" <[email protected]> wrote: > Hi, > > A working Classic II logic board is next to impossible to find. They suffer > of the same problem than the SE/30 one's: failing SMD capacitors. I'm > looking for one myself for a long time. Those offered on Ebay are almost > always dead and beyond repair. > > Given the logic board you have is already burned, replacing all the SMD > capacitors won't likely solve the problem. > You need a logic board with still a bit of life in it and them immediately > replace the capacitors. > > You also mention no power and no HDD spin-up: these are unrelated to the > logic board as the CRT and HDD are powered directly from the Analog board. > So I guess your Classic II has multiple problems... > > A good start is testing all the capacitors with an ESR meter. > > Take Care, > > Nico > > -----Oorspronkelijk bericht----- > Van: [email protected] [mailto:[email protected]] > Namens SStrife > Verzonden: donderdag 4 november 2010 0:36 > Aan: Vintage Macs > Onderwerp: Mac Classic II parts > > I picked up a Classic II fairly cheaply off eBay. First day it worked > fine, but since then it's been having issues. At first it was just > stone dead, no power at all, then I replaced the main power cap on the > analogue board, and now it powers up, but is showing the "simasiMac" > symptoms. Long delay before startup bong, unexpected rebooting, no HDD > spin up, etc. > > Checking the logic board reveals that whoever owned it before me tried > to repair the thing by replacing the caps, but has messed up the PCB > majorly in the process. Lifted tracks, burnt PCB, just a mess. I don't > have any hope of reviving this board. -- ----- 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 [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/
