On Jul 26, 2011, at 6:28 PM, Deiniol ap Deiniol wrote: > I've been given an iBook G4 to look at. This was apparently working > fine then 'died'. > It is a 1.2GHz, with 256MB memory, 80GB hd and combo drive. > > When turned on there is no 'bong', and no illumination of the display > (although when I tried it yesterday after removing the battery for 24 > hours (saw this recommended on another forum!), there was background > illumination visible (a lighter shade of dark grey!), but on turning > off and starting again, the display again showed no sign of life. > > The battery seems to charge OK > > I tried resetting PRAM - but presumably since it doesn't POST and > bong, it wouldn't recognise the keystrokes. > > It won't go into Target Disk Mode, presumably for the same reason. > > The caps lock LED illuminates, but I imagine that's just showing that > the keyboard is getting power. > > Just for the heck of it I plugged my first gen iPod in to see if the > OSX on there would kick start it. > Also I plugged an external monitor in, and no video apparent on that. > > I'm kind of assuming that the logic board has just fallen over and > died for whatever reason. >
Try an Open Firmware set immediately after pushing the power button: Hold down Command, Option, O and F (you may need to wait a good long while for the grey screen to come up). Whether the grey OF screen comes up or not, after a reasonable wait, type these three lines, hitting Return at the end of each: set-defaults (return) reset-nvram (return) reset-all (return) After the third Return, the iBook may well chime and restart. If not, try the same procedure while putting some pressure on the case in the lower left corner of the keyboard (to see the video chip has broken solder joints). If after several attempts the screen doesn't light up or you get no chime, yep, the logic board's toast. But if you get a chime and hear hard drive activity, you may be looking at a broken LVDS or inverter cable, so wiggle the screen open and closed to see if that gets anything going. > A shame because the machine is in very nice condition - indeed a lot > better than my very scruffy mid 2007 MacBook, which I got for a very > good price due to the optical drive being dead! > > I use external FW drives with the MacBook, but does anyone know if the > optical drive from the iBook is physically and electronically > compatible with the MacBook one? > I know I could just by a new optical but I'm a guy who likes recycling > where possible. Nope, a MacBook requires a slim 9.5 mm optical drive, which means no drive from an iBook or PowerBook will fit. Been dere, done dat too. 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 [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
