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iBook G3 to iBook G4 hackery

techknight

Well-known member
I figured some might like to read this, but some may not, but I figure ill go ahead and post what I did today as a good read for the day.

I have an ibook G3 900mhz unit as my main mac laptop. aside from the lombard i just aquired, and the TiBook G4 thats missing a boatload of stuff, like CDROM, battery, etc......

A friend of mine gave me an ibook G4 1.33ghz with a cracked screen.

Well, since im cheap, and if i get the G4 working i wont need the G3 anymore, i figured what the heck. lets transplant the screen.

I took the bezel apart and removed the broken screen and set it aside. it was a CHI-MEI screen. I removed the screen from the ibook G3 and stuck it in the G4 bezel and hooked it all up.

Well, no video. Also the G3 screen was from a different brand/manufacturer other than CHI-MEI. and the LVDS Data cable going to the LCD was also visibly wired slightly different between the ibooks as well.

soooo.... I completely tore down the ibook G4 anyway, because the CD slot load aluminum bracket was bent and causing CDs to get chewed up and stuck. So i fixed that too...

I tore apart the G3 and noticed the cable was slightly longer, and the plug angle was a 90degree instead of a 45 degree from plug to wire, but the plug actually fit in the G4 motherboard, so i figured i would try it.

so i removed the old cable from the G4 bezel, and put the one from the G3 in it. I had to remove the modem from the G4 to make room for the cable, as the G3s cable was a little too long, AND it was the wrong angle as i said, so it blocked the modem connection port. Who uses a modem anymore anyway? so what the heck...

after getting the cable bundled up and plugged into place, allowing it to fit, I was able to put the metal shrouds back on without bowing or clearance issues.

I tested out the G4 after the cable/screen transplant and it worked!!! so that means you must keep cables with screen brands or they wont interchange.

So i put the machine all back together, what a pain that was... and the machine now sings perfectly. I got a new to me G4.

But now with the bad... I have a G3 900 now that is basically scrap because i scavenged its LCD/Cable to fix the G4. So now what to do with the remaining parts? still good of course...

 
See if you can cram the leftover G3 into an old Macintosh LC case. I'd give it a go myself, but I don't have an LC and I can't quite bring myself to gut one of my iBooks :)

 

Scott Baret

Well-known member
Nice idea! We've seen plenty of Power Color Classics, but an LC G4 would be a first!!!

(I do recall someone putting LC guts inside a Cube once, but never the other way around).

 

Bunsen

Admin-Witchfinder-General
And a Mini in a Centris 610.

Actually, the drive adapter he uses there would allow you to use (cheaper, larger, faster) desktop drives with your iBook/LC, as would a Firewire to ATA or SATA adapter.

 

techknight

Well-known member
The only thing about using the Ibook G3/900 in an LC or other style case, is the keyboard/power button. I think they make ADB to USB adapters, i could use up a USB port for that, and the power button is wired to its own dedicated pin? I cant remember. i could connect the power button from keyboard on its dedicated pin, up to the power button connector on logic board i guess....

Only thing is, I dont have the adapter that allows you to hook a monitor up to the ibook VGA socket.

 
IIRC, all of the G3 iBooks and some of the early G4 iBooks used an internal ADB port for the trackpad / clicker. Investigating it now, there are 4 pins - the same as regular ADB. If you could tap into that, you'd be all set. Just about the hardest part of the project would be keeping the LC looking stock.

 
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