If there are multiple sticks of memory in the machine, try removing all but one. Boot it up and see if you get an error. Then shut it down, stick the next chip in, rinse and repeat until you get the error. Hopefully, you'll have enough play on the connecting wires that you don't have to keep pulling the logic board in and out each time. Not sure of the layout of the Mac 128k, but if it's like the SE, the stupid logic board power connector is 90 degrees from the 'hat' (or whatever it's called) on the CRT. Word of advice, be careful when initially unclipping the power cable from the logic board. I managed to crack my CRT because when the cable did come free on my SE, my hand jerked up, hit the 'hat' and cracked the end of the CRT. Then it was off to Ebay to find another CRT (was about as much as the whole computer was when I bought it). Since then, I've been A LOT more careful when removing that cable.
It could also be that one of the chips is simply a bit loose and just needs to be reseated. Again, just pop them out (watch some vids on exactly how it's done - usually just some spring loaded release bars) and put them back in. Be careful though as over the years, the plastic on the release bars has probably become quite brittle so too much pressure may break off the plastic. The memory will still click into place, but it'll be hard to get it out each time with nothing to easily grab onto. Hope this helps. On Monday, June 22, 2015 at 11:57:24 PM UTC-4, Dan T. wrote: > > Hey guys! Thanks for this group, I think its really going to help me. > > I purchased a Mac 128k from eBay with an Sad Mac error code. At boot, it > shows "02FFFF" with a little graphic (a line of bits?) moving across the > bottom of the error code. My googling shows that it should be a memory chip > that is broken but since it's giving no subcode I have no idea which chip > is bad. Is there a way to find which one is messed up or is it hopeless? > > I have let it sit for awhile and the bits did not go away. > -- -- ----- 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.
