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Topic
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Replaced motherboard, now processor upgrades not recognized
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Last Post
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Aug 14, 2007 5:30 PM
by: Thomas Bryant
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Posts:
249
From:
Sussex
Registered:
Jan 5, 2005
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Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 13, 2007 4:44 PM
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Hi, my G4 kept freezing so, after eliminating everything else, I replaced the logic board, with the original OEM Dual 450's the machine boots and behaves normally.
However, when refitting the Powerlogix 1.2Ghz processors the machine will start, i.e fans runs and logicboard LED is on, but the front panel button light stays off and the machine will neither boot nor chime.
I remembered to set the CMU (10 secs) and PRAM, but to no avail, have I forgotten something?
Thanks
Robert
Powermac G4 Giga-ethernet Dual 1.2ghz 100bus 2 Gig Ram 2xHD 80gb+120gb USB1+2/FW
Mac OS X (10.4.9)
wireless network
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Posts:
7,956
From:
Arkansas
Registered:
Dec 18, 2003
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Re: Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 13, 2007 4:50 PM
in response to: Robert Gillam
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Helpful
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Hello! Is the firmware correct for that model and the processor? Tom
G-4/Sawtooth/1.2ghz Sonnet/10.3.9/2gig ram-G-4 1.8ghz Sawtooth 9.2.2 & 10.3.9
Mac OS X (10.3.9)
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Posts:
249
From:
Sussex
Registered:
Jan 5, 2005
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Re: Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 13, 2007 5:07 PM
in response to: Thomas Bryant
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Hi Thomas, thank you for your reply, how does one establish the firmware needed and the firmware installed in my machine? Under "About my Mac" it says the boot ROM version is 3.3.4f1, how do I determine the firmware I need from the version I have?
Powermac G4 Giga-ethernet Dual 1.2ghz 100bus 2 Gig Ram 2xHD 80gb+120gb USB1+2/FW
Mac OS X (10.4.9)
wireless network
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Posts:
7,956
From:
Arkansas
Registered:
Dec 18, 2003
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Re: Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 13, 2007 5:35 PM
in response to: Robert Gillam
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Solved
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Hello! If the machine is a Gigabit one then 4.2.8f1 is the one needed as per THIS page. You have to be booted into OS9 to install any firmware updates. Tom
G-4/Sawtooth/1.2ghz Sonnet/10.3.9/2gig ram-G-4 1.8ghz Sawtooth 9.2.2 & 10.3.9
Mac OS X (10.3.9)
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Posts:
249
From:
Sussex
Registered:
Jan 5, 2005
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Re: Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 13, 2007 6:48 PM
in response to: Thomas Bryant
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Thanks Thomas, problem solved.
I had a problem getting it to boot from 9 to X but managed it on fourth go.
Processors now in and recognized.
No freezes, as yet, so I asume it must of been the Motherbaord causing them.
Thanks again.
Powermac G4 Giga-ethernet Dual 1.2ghz 100bus 2 Gig Ram 2xHD 80gb+120gb USB1+2/FW
Mac OS X (10.4.9)
wireless network
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Posts:
7,956
From:
Arkansas
Registered:
Dec 18, 2003
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Re: Replaced motherboard, now processor upgrades not recognized
Posted:
Aug 14, 2007 5:30 PM
in response to: Robert Gillam
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Hello Again! Always glad to help and glad it's working! Tom
G-4/Sawtooth/1.2ghz Sonnet/10.3.9/2gig ram-G-4 1.8ghz Sawtooth 9.2.2 & 10.3.9
Mac OS X (10.3.9)
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