PowerBook G4 motherboard question

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DaveC - 26 Apr 2006 04:43 GMT

Attempting to resurrect dead 1 GHz DVI PowerBook motherboard.

What are the minimum components required to be connected for the motherboard
to show signs of life?

I currently have these connected:
- power-in connector & pcb
- power button
- 3.6v backup battery pcb
- headphones (to hear the boot gong or error beeps)

What else:
- keyboard?
- hard disk?

All I'm looking for is a boot gong or error beep code.

Also looking for group, mail list, or other forum that has the greatest
wealth of PowerBook hardware repair discussion. Suggestions welcome.

Thanks,

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The Mac Dude - 13 May 2006 06:54 GMT

> Attempting to resurrect dead 1 GHz DVI PowerBook motherboard.
>
[quoted text clipped - 17 lines]
>
> Thanks,

I don't know the exact answer but suspect most things have to be present
except for the HD ( at least older Macs would happily gong & then show a
disk with a ? in it if no system was found).

Get the manual through Gamba's site,
http://home.earthlink.net/~gamba2/index.html.

You're in ds-country it looks like, dead mobos are not easily diagnosed
without specialised equipment. Maybe you can establish voltages on the
various rails (+/- 5V, +/- 12 V, whatever the Mac uses on the board).

I assume you verified the power adapter works..?? You don't need a
battery with the adapter.

Good luck,

Mac Dude

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Mac Forum / General / Hardware / May 2006

PowerBook G4 motherboard question