New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

Start a Discussion

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

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

Power Mac G5 Won't Power on or Off?

Post Reply New Thread Subscribe

Thread Tools

Member Since: May 04, 2011
Posts: 2
awedge is on a distinguished road

awedge is offline
I thought I would check here to see if there may be a simple fix before I take my Power Mac G5 in.

I was editing some video and took a break for some dinner. I know the machine was in sleep mode at the time, storm knocked power out. I have the machine plugged into a Monster Surge protector. When the power came back on (oddly) the LED power light on the front was on again like the machine was still in sleep mode.

That is all you get now. I tried to hold in the power button to hard reboot (nothing). If you unplug it (wait) and plug it in again, you hear like a metalic "clink" and the LED power light comes on but that is where it stops. I also tried just plugging it into the wall by-passing the surge unit and the results are the same. It seems to power on according to the light without depressing the power button but seems to be in sleep mode, then again I have no idea...
QUOTE Thanks

Member Since: May 04, 2011
Posts: 2
awedge is on a distinguished road

awedge is offline
Got it figured out. Thought I would post the fix incase someone else runs into this problem. It would appear that it was a simple fix. Needed to replace the internal battery. The little 3.6v battery must have something to do with the G5 powering up. Stuck a new battery in it and all is fine now...
QUOTE Thanks

hughvane's Avatar
Member Since: May 18, 2008
Location: Banks Peninsula, New Zealand
Posts: 3,285
hughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nice
Mac Specs: MacMini 2.4, 8 Gb, OS 10.10 and 10.6; MacBook 2.4, 4 Gb, OS 10.6.8

hughvane is offline
Reads like a PSU problem, possibly an internal fuse has gone. As I understand it, the indicator LED powers on before anything else. Do you hear the hard drive spin (a high-pitched whining noise), followed by the slight scratching noise commonly associated with the HD being read, plus fan noise; or is there complete silence after the 'clink' you refer to?

Edit: ignore the above, glad your power issue is resolved.

Please post your Mac (or other) specs and MacOS version in your post, your profile or your signature. It helps us to help you better.

I'm leaving now to go and find myself. If I should return before I get back, please ask me to wait.
QUOTE Thanks

Post Reply New Thread Subscribe

« Can't decide 21 or 27"?? | G4 to G5 »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread Starter
Last Post
A Switchers guide to recommended free Apps to download to your new Mac the8thark Switcher Hangout 67 03-19-2013 10:48 AM
OS 10.7 Lion feature/rumour roundup the8thark Apple Rumors and Reports 44 08-17-2011 02:03 PM
power Mac G4 mMDD ronbo191 Apple Desktops 5 12-18-2010 07:25 AM
Power Mac G4 as a Media storage cmcguire2 Apple Desktops 0 01-28-2008 11:29 PM
Questions about Mac Mini and Imac-how much power? markw10 Apple Desktops 3 08-22-2006 06:12 PM

All times are GMT -4. The time now is 08:45 PM.

Powered by vBulletin
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.

Welcome to

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!

(4 digit year)

Already a member?