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Powerbook G4 12" - Boot OS9?
Posted by: smrieck511 on 2025-06-16 08:43:37 I remember this as a problem with the unsupported bluetooth module, I removed it. See step 53: https://www.ifixit.com/Guide/PowerBook+G4+Aluminum+12-Inch+867+MHz+Bluetooth+Replacement/216 This is really deep in there, easier to unplug it and leave it in (step 30) With the audio, you can solder-bridge the jack on the audio daughterboard to simulate the dummy plug if you want to make this cleaner. If you are interested I can get a photo of this. Thanks, I would very much appreciate a photo of that.
Posted by: joevt on 2025-06-16 13:17:56 "USB Prober" from the USB DDK 1.5.9f1 can show info about connected USB devices.
Posted by: smrieck511 on 2025-06-16 13:44:46 "USB Prober" from the USB DDK 1.5.9f1 can show info about connected USB devices. Thanks! Found it on macintoshgarden.
Posted by: opualuan on 2025-06-16 21:14:08 This is the easiest way to rework I found: remove R223. Easily reversible if needed. This is located underneath the hard drive bracket, I think it can be removed without taking out the motherboard. Tested good today. This way the computer thinks there is always a headphone plugged in. No startup chime, but from then on sound works from internal speakers including volume control. If you plug in external speakers/headphone, sound comes from both internal and external.
Posted by: macdude888 on 2026-05-18 16:35:09 Instructions here for OpenFirmware method and MacOS9Lives liveCD method. Mac Classic Tips and tricks to help keep your Mac OS 9/Early Mac OS computers usable today. Software downloads, guides, hacks and news. mac-classic.com
Posted by: smrieck511 on 2026-05-18 18:02:45 Instructions here for OpenFirmware method and MacOS9Lives liveCD method. Mac Classic Tips and tricks to help keep your Mac OS 9/Early Mac OS computers usable today. Software downloads, guides, hacks and news. mac-classic.com thanks very much. Yeah I did get this working a while back. It's a great little OS9 machine for sure... now I need to find out if it's possible to replace the backlight.
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