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 - Power Mac G4 (mirrored drive 8570) Won't Power On


Post Reply New Thread Subscribe

 
Thread Tools
j9fleri

 
Member Since: Oct 07, 2008
Posts: 2
j9fleri is on a distinguished road

j9fleri is offline
Hi there,
A few months ago I installed Leopard on my g4 tower and since then I've been having power problems. I realized I plugged the wrong power cord in when I set everything back up, so I figured that was the problem, thinking it was an issue of not drawing enough power; however, the problem has persisted. It used to be that I'd have to press the power button a couple of times for it to really take, then it was taking longer and longer to make that happen. Now it just won't power on at all.
I recently posted this issue elsewhere asking for advice on how to find the PMU button. Thanks to two very helpful replies I was able to locate it and reset it. Unfortunately, that didn't fix the problem. One post I saw suggested we take the battery out and unplug everything and put it all back together after at least ten minutes. That didn't work either. Is there anything else we can try before shelling out for a new battery when we don't even know if the battery is the problem? Any diagnostic advice would be great! Thanks!!
QUOTE Thanks
hughvane

 
hughvane's Avatar
 
Member Since: May 18, 2008
Location: Banks Peninsula, New Zealand
Posts: 3,259
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, 4 Gb, OS 10.8 and 10.6; MacBook 2.4, 2 Gb, OS 10.5.8; G4 eMac 1.25, 2 Gb, OS 10.4.11

hughvane is offline
How about testing the present battery first? Take it out and test it with a multimeter. If you know a friendly registered electrician, that would be best, because he would have a meter which measures higher amp readings than the diy-type multimeter. A battery will often give the correct voltage reading (ie. 3.6 v) but that can be misleading. It's how much current that voltage is pushing that matters.
If it's not a battery problem, the next port-of-call is the power supply unit, which can also be tested with a multimeter by someone qualified to do it.
QUOTE Thanks
louishen

 
louishen's Avatar
 
Member Since: Oct 22, 2007
Location: London
Posts: 8,940
louishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant futurelouishen has a brilliant future
Mac Specs: Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver

louishen is online now
TRy hughvane's trick first, my G4 wouldn't power up and a new battery fixed it, and its a fix that doesn't cost much

Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system
QUOTE Thanks
harryb2448

 
harryb2448's Avatar
 
Member Since: Nov 28, 2007
Location: Nambucca Heads Australia
Posts: 17,192
harryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond reputeharryb2448 has a reputation beyond repute
Mac Specs: iMac i5 2.7GHz OS X.9.4 and OS X.10

harryb2448 is offline
MDD are notorious for no boot when the pram battery is flat. DO as hughvane suggests, boot with battery out , install new battery and reboot zapping the pram, holding down (together) Option, Alt (the one with the apple on it) P and R following the chime and keep held down until after second chime.

Keep us posted.
QUOTE Thanks

Post Reply New Thread Subscribe


« Home Folder External Drive | 10.7.4 Exremely Slow »
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
Thread Starter
Forum
Replies
Last Post
Which External Hard Drive should I buy/Do you suggest? justin1083 Other Hardware and Peripherals 627 07-18-2014 09:54 AM
Extra Internal Drive for Power Mac G5 gana Apple Desktops 8 01-27-2008 07:39 PM
need help with Mac OS drive backup imaging vois2 OS X - Operating System 2 09-22-2007 11:16 AM
Mac Users Get More ISP Choices schweb Apple Rumors and Reports 1 03-06-2003 10:57 AM

All times are GMT -4. The time now is 07:25 AM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

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?