single vertical magenta line on screen

Hi

If you restart your mac and depress the command+s keys you should be in the single user command line. Do you see it then?

I work at an apple repair centre and I have seen a few of the iMac G5s (PPC) come in with this issue. There is an Apple REP for affected units which I think is still currently running:

http://www.apple.com/au/support/imac/powersupply/repairextension/

If your iMac is out of warranty or you did not seek the Extended Warranty when you first purchased your model you may want to consider the REP. If your model is not covered by the REP and you don't have warranty cover then its likely its the main logic board. This is an expensive part as you are probably aware. If it turns out to be this then you could be looking at a repair bill that is more than the value of your mac.

Still don't despair. Try the suggestions already given and who knows it might 'fix' it?

Tony

Hello and Welcome to Apple Discussions ...

Try going to System Preferences/Display/Color LCD and click the Calibrate button. Reboot and see if that takes care of that pesky line.

Also, since you are running 10.4.8, you might want to update your system software. Apple Menu Items, (Apple logo top left in your Desktop)/Software Update. Most recent Mac OS for Tiger is 10.4.11.

Also, run Disk Utility, Applications/Utilities/ and Repair Disk Permissions. That can fix a myriad of problems.

Carolyn 🙂

If you have apple care call them they will get you to send your puter to them they will fix it!! I did, they fixed it! It is a known issue! I am sorry my apple care has run out hope you still have yours!
Hope this helps!
B

I have an iMac G5 bought in Feb 06 with the same problem. First vertical cyan line appeared last week, and another yellow has appeared this week. There are a number of discussions on the internet, and this problem appears to be affecting a great number of people worldwide.

As yet, apple do not seem to be addressing this problem which looks like it may be due to defective hardware. I am disappointed that it has not been addressed yet and it my affect my choice of future hardware. (Some sources suggest that other manufacturers have experienced similar problems, and have offered an extension to warranty or replacement for defective models)

Here's hoping for a satisfactory resolution!

Welcome to Apple Discussions!
Unfortunately this kind of problem may indicate the inverter board may be going to go.

Run the hardware test that shipped with your Mac.

Hello Bryan,

Do you by any change know whether it's a hardware or software problem?
I have the same problem and have a warranty for the hardware.

Z

Check out this site (http://www.geocities.com/surfithead/pblines.htm) which has suggestions on how to get Apple to address this problem affecting at least 1,100 worldwide.

I have an MBP 2.4GHz running Leopard and it has a red vertical line too.
My warranty is over now so that I'm wandering out to figure it out.