Welcome to the MacNN Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > iMac G4 700 video problems

iMac G4 700 video problems
Thread Tools
gunnar
Mac Enthusiast
Join Date: Feb 1999
Status: Offline
Reply With Quote
Apr 20, 2006, 02:05 PM
 
My iMac G4 700 is screwing up. I have the latest Tiger on it. Especially in Safari, when viewing eBay the screen will screw up with rainbow colored digital noise and then the machine becomes unresponsive. What is causing this?
     
gunnar  (op)
Mac Enthusiast
Join Date: Feb 1999
Status: Offline
Reply With Quote
Apr 21, 2006, 11:48 AM
 
The problem appears to be getting worse. Logic board, video? I only have the one stick of Apple RAM in there. Here is a screenshot:
     
gunnar  (op)
Mac Enthusiast
Join Date: Feb 1999
Status: Offline
Reply With Quote
Apr 21, 2006, 12:06 PM
 
I booted up in Safe Mode and for the past 30 minutes haven't had any problems. What might this point to?
     
P
Moderator
Join Date: Apr 2000
Location: Gothenburg, Sweden
Status: Offline
Reply With Quote
Apr 22, 2006, 05:33 PM
 
A lot of things are possible, but I'd look for a bad driver first. There is a terminal command called "kextstat" that will show you which kexts (kenrel extensions) are loaded. Run it once in safe mode and once out of it and see if there are any differences. Look for any graphics driver that are loaded in mode and not the other- it might be corrupted.

Also try deleting the kext cache.
     
gunnar  (op)
Mac Enthusiast
Join Date: Feb 1999
Status: Offline
Reply With Quote
Apr 22, 2006, 09:16 PM
 
I erased the HD with the 35 times random write, then installed Tiger fresh, same problem. So, it seems certain to be a hardware problem, probably logic board.
     
   
Thread Tools
Forum Links
Forum 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 On
Top
Privacy Policy
All times are GMT -5. The time now is 01:33 AM.
All contents of these forums © 1995-2011 MacNN. All rights reserved.
Branding + Design: www.gesamtbild.com
vBulletin v.3.8.7 © 2000-2011, Jelsoft Enterprises Ltd., Content Relevant URLs by vBSEO 3.3.2