> > I have a very strange problem with my Powerbook 540 b/w LCD Display: When I > start up my Powerbook everything works fine. But after some minutes it > starts to get more and more black at the borders. So when it's running for > maybe more than 2 hours i have very ugly dark spots (about 1/2 inch or even > more) at the edges. To get a blank screen again I have to shut power-down > the notebook for at least half a day or more. > > Thanks, > Kai
Kai, Your problem is very common in older machines. It's usually caused by an aging backlight; when they get old, they don't work as well when warmed up. That's why turning it off and waiting helps. The solution is to replace the backlight. I believe the 540 has two fluorescent tubes (one on each side of the display), but my memory might be faulty (the 540 might only use one, while the 540c might use two). In any case, the tubes themselves are available fairly cheaply from sources such as DigiKey. There's probably a better source there in Germany (maybe Konrad?), so ask around. -- Prof. Thomas H. Lee Center for Integrated Systems, CIS-205 420 Via Palou Mall Stanford University Stanford, CA 94305-4070 http://www-smirc.stanford.edu 650-725-3709 ph, -3383 fax -- PowerBooks is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/powerbooks%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
