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iMac G4 grey screen
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Mac Elite
Join Date: Jan 2004
Status:
Offline
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I'm looking at an iMac G4. When I got it it wouldn't boot, it chimes but sticks on a blank grey screen.
I hauled the drive out and it was corrupted (got most of the data off) so I put a new 160Gb drive in.
Unfortunately it still won't boot. It just hangs after chime on a grey screen. I know the drive doesn't have a system on it yet but it won't boot into FW target mode, single user boot.
I'm guessing it's actually a logic board fault?
Any ideas?
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Moderator Emeritus
Join Date: Apr 2005
Location: Cambridge, UK
Status:
Offline
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Have you got the master & slave configured correctly? Does it do anything more with NO drives attached?
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Mac Elite
Join Date: Jan 2004
Status:
Offline
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The new drive was set to cable select but I've hoiked it out and set it to master. Not checked the cd drive, I assume it will be set to slave but I guess it can't hurt to check. Might just pull the ide bus and try to boot from a fw drive just to eliminate things.
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Mac Elite
Join Date: Jan 2004
Status:
Offline
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OK with no drives attached it's still a grey screen. Attached a fw dvd drive to boot from but nothing.
So it's checking RAM etc and giving a chime but not getting as far as checking for a system disk.
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
Status:
Offline
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Strange. What about holding down T at boot to try target disk mode?
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Mac Elite
Join Date: Jan 2004
Status:
Offline
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Originally Posted by Andrew Stephens
OK with no drives attached it's still a grey screen. Attached a fw dvd drive to boot from but nothing.
So it's checking RAM etc and giving a chime but not getting as far as checking for a system disk.
update: When I originally popped the case the TDMS cable fell out of the connector on the motherboard. The cable should be firmly attached and when I put it back in its very wobbly. May be this? Will try connecting to second monitor. mIght have been starting after all but not displaying.
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Fresh-Faced Recruit
Join Date: Feb 2009
Status:
Offline
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Did the cable repair work??
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Mac Elite
Join Date: Jan 2004
Status:
Offline
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Originally Posted by HWgeek
Did the cable repair work??
Nope. I attached an external screen and it started fine. Must have been a fault in the TDMS cable somewhere. Customer was happy to have it back to use with a small external screen as a print server.
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