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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to sci.electronics.repair,comp.sys.mac.hardware.misc,comp.sys.mac.portables
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PowerBook G4 motherboard question
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, -- DaveC This is an invalid return address Please reply in the news group |
#2
Posted to sci.electronics.repair,comp.sys.mac.hardware.misc,comp.sys.mac.portables
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PowerBook G4 motherboard question
In article .net,
DaveC wrote: 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, 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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