Multi coloured vertical lines on screen

Hi - My iBook G4 (approx 15 months old) has suddenly developed multi-coloured vertical stripes on the screen. I've tried resetting it; tried the start-up software; tested the power cable - the problem remains the same. I've got an awful feeling the logic board has gone as something similar happened with my G5 iMac a couple of years ago. Fortunately I have extended the warranty. Anyone out there with any ideas what the problem might be? Thanks, Kate

If you are under warranty, by all means call Apple Tech Support. They can walk you through various troubleshooting techniques on the phone and decide if your iBook needs to be sent off for repair--under warranty of course, since that is why you have Applecare.
In the meantime, get all your important data backed up ASAP.
One other thing you can do is a clean install of the OS. This will eliminate the possibility that corrupt software is the problem--degraded software can do all kinds of weird things. If the problem is still there after a clean install of the OS, then it is going to be a hardware problem of some sort and they will repair it for you for free.
Good luck!

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