[jack71]

Well i got some new ram for X-Mas unplugged my G4 and installed my ram and believe i was grounded ....So went and powered up the G4 and now the light comes on for a second and then goes off i can hear the fan come on as well ....I took out the ram i installed and the same thing the light comes on for one or two seconds then goes off....Does anyone have a clue what might be wrong /forums/ubbthreads/images/graemlins/confused.gif Any help appreciated thanks /forums/ubbthreads/images/graemlins/laugh.gif

[Chris Breen]

Try reseating all the RAM modules and PCI cards in the Mac. It's possible that when you opened it you jarred something loose.
Chris

[jack71]

Thanks for the response i have tried all of that and still no luck i think for whatever reason my power supply box has quit or that's what i hope it is

[DanLopez17]

Umm... maybe the power cord is loose? I know it sounds stupid, but that's what happened to me once. The power cord wasn't in tight, so I thought the machine was possessed. Once I realized it was loose, I tightened it and it never turned off unexpectedly after that. But that was with a Mac IIcx, not a Dual G4.

[jack71]

Thanks for the response /forums/ubbthreads/images/graemlins/smile.gif Nope not the power cord either I think i will have to bring this one in... And i got this computer last year for X-Mas....I'm just worried about some of the info i have on there and hope the hd is alright....

[Philbert]

Put your worries aside. Chances are that you simply need to reset the cuda switch. (A very small button next to the battery.) Unplug the machine and push the button ONE TIME ONLY. Don't hold it in and don't push it more than once. ON-OFF Reconnect the power cord and start 'er up.
(The reason for the emphasis is because if you don't follow those directions closely, you can really cause problems with your machine.)
Here's Apple's document on the subject.
hth ... Phil /forums/ubbthreads/images/graemlins/smile.gif

[jack71]

Thanks Philbert for your response i thought that was going to do the trick but no such luck /forums/ubbthreads/images/graemlins/frown.gif Oh well thanks again /forums/ubbthreads/images/graemlins/smile.gif

[TugBoat666]

Jack71,
I had a similar experience with a G4 667MHz Mac about a year and a half ago. It turned out to be a bad power supply and apple replaced the whole computer for me. The only difference was that when I reset the PMU (power management unit) next to the battery, it fixed the problem for a few times before dying completely. Keep us posted when you find out the answer.
Tug

[Philbert]

Sorry about that. I was farily certain that would take care of it. /forums/ubbthreads/images/graemlins/frown.gif
Well, another thing to try is resetting the logic board. The steps below are from another AKB article. (Actually, it's from the link provided on the first one.)

1. Unplug the computer.
2. Press the Power On button on the front of the unit.
3. Open the side access panel.
4. Remove the battery from the logic board.
5. Wait at least 10 minutes before replacing the battery.
6. Make sure the battery is installed in the correct +/- direction.
7. Reassemble the computer and test the unit.
[/list]
You might need to reset some preferences after doing this.
Phil

[jack71]

Yes reset the logic board as well same same /forums/ubbthreads/images/graemlins/frown.gif I think it is a bad power supply and hope it does not cost to much as this time of year things are a little tight....Thanks to all who responded /forums/ubbthreads/images/graemlins/smile.gifNow i have to try and edit some X-Mas video stuff on my Dell should be interesting /forums/ubbthreads/images/graemlins/smile.gif
Also will keep you posted on what was wrong just to have on record for the forums probably bring my computer in tomorrow if my Apple store is open

[jack71]

Update and was a bad power supply and is covered under warranty thank god