Hi, Today I opened my MDD (1.25 GHz 2003 model) and it uses a Samsung PSU, those PSUs seem to go at once and when they go the home fuse goes also ...
All fans are running, the red LED on the mainboard is lit, I get a bong, then the disks try to initialize but stop after a while. When I put a CD in the DVD-drive that drive also spins up for a while. But my monitors stay dark and the keyboard is not initialized - the green LED on the capslock key stays dark. That's why I cannot use any key-combos at startup, no PRAM reset or Alt to change my startup disk, no shift to do a clean start. The mouse doesn't work either because the drive should open when I start with the mouse pressed down. I tried two keyboards. One time the fans revved up after the bong for a second then back to slow. I pulled all flatcables and power supplies to the drives and reseated them. I have 3 start volumes, two Panther and one Tiger, I normally run Tiger from a big SATA-drive that I use with a little SATA to PATA adapter. I already removed the PRAM-battery for quite a while, tried a new one, pulled all the RAM and cleaned and reseated it. So I guess it's not the PSU's fault but what do I know? This is the first Mac I cannot get to run again after a crash, it's very frustrating. Regards, Jörg. On 3 feb, 23:47, John Carmonne <[email protected]> wrote: > On Feb 3, 2011, at 2:06 PM, Kris Tilford wrote: > > > > > > > > > > > On Feb 3, 2011, at 3:40 PM, yawg wrote: > > >> But this time I didn't even get the "restart screen" again but only a > >> bong and then nothing, both my monitors stayed dark. > > > The fact that you got a "bong" or chime was good. Did you try Safe boot > > holding the Shift key? > > >> I couldn't even reset the PRAM, no second bong. > > > Might be a keyboard issue? Something could have happened the the keyboard > > when you were gone? > > >> I tried reseating the 3 RAM-sticks, 2 512 and one 1024 MB, still no go. > > > If you get stuck, remove RAM to only one stick at a time. > > > I don't think it's likely this is a power supply problem. > > > You might try booting a install CD/DVD and running Disk Utility on the HD. > > You also might consider reinstalling the latest Combo Update if you have > > further problems. For certain do a Safe Boot holding the shift key because > > this will trash problematic cache files and get you a relatively clean > > start. > > Remove the PRAM battery and HDD's along with all the RAM including all cards. > Unplug all cables. Spray clean all connections with a residue free contact > cleaner. Wait a couple of hours then depress to CUDA switch for 15 seconds > then reassemble with 1 stick of ram and restart. > > John Carmonne > Yorba Linda CA > 92886 USA > Sent from my MBP -- 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 [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
