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Powerbook G4 550Mhz-backlit but no display
http://www.powerbookmedic.com/forum/viewtopic.php?f=11&t=2532
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Author:  terrytman [ Sun Mar 28, 2010 4:06 pm ]
Post subject:  Powerbook G4 550Mhz-backlit but no display

Hi everybody, This is my first post on what appears to be a great site. Any advice will be appreciated.
Here goes: I have a tibook onyx 550. Like new. I put a new 5200rpm 120gig HDD in it a couple months back and maxed the ram at 1g and did an open firmware install of Leopard. It has been running great for a couple months until recently when I began to have display distortion. I've reset the PMU and PRAM, no luck(neg), EVEN went back and reinstalled the original OSX 1 that came with the ti, again neg. The display issues got worse and worse until now, I get a startup chime and a gray backlit screen. Obviously nothing is getting to the display but a backlight. I hooked it up to an external mon and it works fine. Any ideas short of replacing my laptop?

Author:  justin-pbmedic [ Mon Mar 29, 2010 4:23 pm ]
Post subject:  Re: Powerbook G4 550Mhz-backlit but no display

any issues with the hinges? If the hinges have gotten wobbly they could have easily cut through the display cable.

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