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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > HELP!! Display Malfunction

HELP!! Display Malfunction
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Dedicated MacNNer
Join Date: Apr 2002
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Sep 26, 2003, 07:58 PM
 
Hello. I have had my PBTi for a few months now and everything was great until today. Out of nowhere, I'm getting red blocks of color on my display. Sometimes it's just white blocks. It's almost like the displays being refracted. It's very difficult to describe. It happens in both OS 9 and X. If I shutdown for awhile, it goes away, but so far it keeps coming back.

Has anyone else had a similar problem? I'm guessing hardware. I'll take it in tomorrow, but I was curious if anyone else had similar symptoms.

Thanks.
     
Dedicated MacNNer
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Sep 27, 2003, 03:37 PM
 
Well I've taken a screenshot of what happens when things go nuts. Anybody?

Bad Screen
     
Fresh-Faced Recruit
Join Date: Jul 2002
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Sep 27, 2003, 03:57 PM
 
Looks like a video ram problem...which in the case of a Ti Book almost certainly means a new logic board.

What happens if you try changing screen resolution ? May clear or partially clear the video corruption if it is the vram.

Applecare ?

G
     
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Sep 28, 2003, 05:56 AM
 
It's still under it's year warranty. I was actually about to buy the applecare the day this started. If I have a local service department, can they diagnos it on the spot and send it in for repair? I've heard that support likes to make you reinstall the OS etc as kind of the default solution. It happens in both OS 9 and X though, so I figured it was hardware.

Thanks for the reply.
     
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Sep 28, 2003, 06:32 PM
 
Just an update for future searches.

I went ahead and did the hardware test on my PB. Everything passed. But it said my VRAM was only 32MB. Supposed to be 64MB. So I zeroed my harddrive, reloaded X. Now it says my VRAM is 48MB.

Hopefully this will expedite the process when I take it to the service center. School starts tomorroy and I need my PB asap.

What happens if they don't have a logic board, or can't repair it? Does it get replaced? I'm sure that they must have a warehouse of parts for ppl that have applecare and have PBs before the current ones. Just curious.
     
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Sep 28, 2003, 08:06 PM
 
While it is possible for drivers to cause similar glitches, in your case, I'm inclined to agree that there is a hardware problem. (The fact that it appears in both OSes supports that.)

That said, I would do a full PRAM/NVRAM/PMU reset (instructions at http://docs.info.apple.com/article.html?artnum=14449 ) first. Most likely it will do nothing, and the unit will have to go in for repair. At least (assuming you have apple send you the box to your house), it'll be done quickly.

tooki
     
   
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