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g4 cube startup problems

Submitted by chris501 on April 8, 2005 - 11:06am. PowerPC Macs

Finally I've made it. Got me a G4 Cube. There is one little problem: this tiny bastard won't start up!

I've tried everything, from resetting the PMU over zapping PRAM and reseting a couple times to swapping some parts. Nothing seems to work, all I get is a spinning HD and CD-Drive and a wonderful LED lightning up, but that's less as I was expecting from it to do... ;-)

Has somebody any experience on that kind of problems??? Chris501

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chris501's picture

g4 cube - addition

Submitted by chris501 on April 8, 2005 - 12:18pm.

just realized that there is a small green LED on the mobo, called DS1, it goes on after pressing the power button and goes off after about half a minute or so...

» PM G5 1.8GHz SP / PB 12" 800MHz / Acer 3.0GHz HT / Compaq 386@25MHz / Apple Certified Technician & Help Desk Specialist

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Service Manual

Submitted by Texas Mac Man on April 9, 2005 - 3:27pm.

You can download the Cube's Service Manual here.
http://www.whoopis.com/computer_repair/

Could be a dead internal memory battery. Check this site for battery part numbers and sources.
Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
http://www.geocities.com/texas_macman/pram.html

Cheers, Tom
Mac Troubleshooting, Maintenance & Tips
http://www.geocities.com/texas_macman/MacTroubleshoot.html

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i'll check it out...

Submitted by chris501 on April 10, 2005 - 5:07pm.

Thanks for your assistance, Tom! I'll check it out on Monday when I'm back at work.

One thing is for sure: it's not the memory battery, already thought of that but it seems to be ok (3,6 Volts).

Thanks again, Chris

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RE: Service Manual

Submitted by chris501 on April 11, 2005 - 9:11am.

Thanks again for the links, but it seems that the mobo is really dead. Everything else works fine, beginning from RAM over battery and HD, even the graphics card is working perfectly... seems that this will get very expensive!

Chris

» PM G5 1.8GHz SP / PB 12" 800MHz / Acer 3.0GHz HT / Compaq 386@25MHz / Apple Certified Technician & Help Desk Specialist

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Have you tried resetting the

Submitted by classic_macster on April 11, 2005 - 2:05pm.

Have you tried resetting the CUDA switch? That may help.

CM

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www.cubeowner.com They may

Submitted by truly_cuboid on April 11, 2005 - 7:21pm.

www.cubeowner.com

They may have the answers. And you may have damaged (or have someone else damage) the VRM board. Or it may have been replaced. Or whatever. You could try getting another, to see what happens?

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...the first aid was the last...

Submitted by chris501 on April 13, 2005 - 4:05pm.

thanks guys for all your help! but the main logic board is completely dead, and a new one costs over 450 euros (i guess at least 480 american dollars), and that's way to expensive. i'll go and get a mini for that!

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