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

Mac Pro - PowerMac G4 AGP - Dead?


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RichardParry

 
Member Since: Apr 13, 2007
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Hi All,

Okies, I picked up a second hand Apple G4 AGP the other day off eBay - was working fine when I got it, but since then i've upgraded the hard drive (I think the original was on its way out as it kept spinning up and down during use), installed a USB 2 card and installed 2x 256MB Crucial DIMM's to bring the system to 1GB - I was able to reinstall OS X 10.4.9 no problems. I also upgraded the DVDRW drive (to a LiteOn model). Has been working fine for about a week, but I tried installing some software and that's when the system went to pot. I tried installing Office X, Creative Suite and Toast Titanium. Office went on fine, but Word crashes at startup with an error, but the other Office apps work fine. The same error happens when I try and load Toast, and the installer for Creative Suite crashed too, with an unexpected error.

I tried restarting, then it said the clock was showing 2001, and it crashed (OS crash), upon restarting there was no video output for ages, although I got the chime at power-on or during a hard-reset. I left it off for a while and also tried holding the power button, which seemed to bring it back to life, but not for long - it's dead Jim!

The system powers on fine, green light at the front, including the chime, but no output from the video (tried different monitors). I also tried removing all the components I recently installed to the bare motherboard (minus original RAM supplied with the system when working and the graphics card).

Any ideas what I can try or what it might be - or is it "return to sender" time?

Thanx, Richard
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baggss

 
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Insert the system CD/DVD and hold down the C key from booting. If it starts up, then it's a software/system problem. If you get the same results, it's a hardware problem.


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RichardParry

 
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Yeah, i've tried all of this, one time I did manage to get it to startup while holding the C key, but it just froze on the spinning logo (before it would get to either the OS X loader or the boot loader from the CD). Since then I haven't had any luck, no display, although everything is running (chime at power-on etc) it seems rather dead.

Any ideas what I can now do to troubleshoot the system?
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Since at one point it said the date was at 2001, I am wondering of the PRAM battery is dead. Some Macs will not light the display if that battery is dead. Also try holding down the following keys at the same time right after the chime, APPLE-OPTION-P-R. Keep them down and wait for 2 sets of chimes then let go. See if that brings it back to life. If not try the battery. you will see it on the Motherboard with a black cover on it. 3.6 Volts. You can get them either on Ebay or at a lot of Radio Shacks.
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RichardParry

 
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Thank you for the advice, I will get out the multimetre and give it a quick check. I am curious, what is the recessed button on the front of the G4 unit, next to the reser button for - when pressed it seems to do nothing...
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That's so odd.. My G4 Sawtooth did the EXACT same thing.. Except it wouldn't reset the PRAM, and the PRAM battery is still good.. I even replaced the video card, ram, harddrive. But still no avail.. Now my idea for a media server went down the tube..
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RichardParry

 
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Ok, I just tried that and it seems to have brought it back to life - for now - but applications still crash when I attempt to load them, such as MS Word, Toast Titanium and I can't install Creative Suite - just crashes during the installer on Disc 1
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I dunno what others think of this but...

I'm not sure which DVD RW LiteOn model you installed but I checked the specs of all these out and they only list Windoze for compatibility...
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SuB8HaVeN

 
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I installed a newer IDE Lite-On DVD-RW in one of my G4 MDDs and G4 DA and they both worked fine. I couldn't tell you the model number off the top of my head.

I would try reinstalling OSX. If you still get problems, the next time it hangs on startup at a blank screen, try to remove the hard drive then power up. It could be your motherboard/logic board biting the dust; I would try replacing the battery as well.

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