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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

G4 might be toast?


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mcjacksonnelson

 
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i probably already know the answer to this, but what the hey?

came home tonight to find our power was out. it came back on about 20min later and now my 733 G4 wont boot. its plugged into a power strip and everything else on that strip works fine. i tried another strip and several other outlets. also, reset the PMU and it still wont boot. absolutely nothing happens when i press the power button.

i bought this computer brand new in 2001, i know its super old and its probably a shot power source. but it's worked flawlessly up until now so why buy a new one right?

i just figured i'd see if any of you had any other ideas as to why it wont boot.

thanks in advance.

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harryb2448

 
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Maybe the power supply fuse has blown, or at worst the ps itself. Tough luck mate. When you say power strip, any chance it is a surge protector such as a brand that offers a warranty against this?
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mcjacksonnelson

 
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well, the power strip is just as old as the computer lol!

i'd been planning on buying a new computer anyway. so maybe it's like in 2001 when HAL finds out they want to disconnect it, it decides to make my life **** first....

but, i might try to check the power supply fuse (thanks for that tip) before i totally give up. any docs about how to do that?

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dtravis7

 
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My 667 Mhz Digital Audio did that same thing but the big difference was mine was modded. 1.8Ghz G4, Radeon 9800 Pro and every other mod you can do. The power supply was being pushed way beyond what is was meant to do. It lasted 3+ years that way and one day just powered off and would do nothing. I took a 350 Watt Sparkle PC Power supply and re-wired it for the DA and it's like new again.

To see if it's just the fuse, you have to remove and take apart the power supply. The fuse will be on one of the boards. Mine was blown but a new one blew right out.
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hughvane

 
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If you're lucky, there's a screw-in tube fuse (black plastic cap) on the power supply. If not, then it means opening up the p-s and following the power line (red or brown colored) from where the power cable enters the p-s, to a fuse. Not always easily identifiable, so check this fuse symbol - Google Search for the sorts of symbols you might encounter.

You should use a multimeter to trace the circuit.

Your other option is to search the 'net for a replacement power supply. They're still available, eg. Power Mac G4 Power Supplies.

Good luck!

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mcjacksonnelson

 
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thanks for all the tips guys.

mine isnt really modded, just maxed out RAM and a sound card really (that i dont even use anymore). so i dont think the PS would be taxed at all. ill try and take it apart, but honestly, i just think its time for a new machine. i cant update the OS anymore without installing a new, faster chip and that would cost me a bunch. plus i have a bunch of freelance projects and music i need to work on right away.

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harryb2448

 
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Ahh mcjacksonnelson you want the new machine we know!

Good luck with your choice.
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