> Date: Mon, 23 Sep 2002 19:11:52 -0700 > From: Marc Sira <[EMAIL PROTECTED]> > Subject: [Duo2400] Re: Duo 280 screens darkening > > >Looking really closely at my 250's screen, I think it's even worse than > >that. Before the menu bar comes up, I *swear* I can see a ghost of the > >Apple from the Apple menu. If so, it's the first time I've ever seen an > >LCD with screenburn. > > No reason why you shouldn't - all LCDs get burn-in, but it's always > temporary. A few hours of a different picture (or none) and the liquid > crystals relax. The Apple through Edit menus are likely candidates for > obvious reasons. I've seen it in many, many cases and it's gotten better in > all of them.
In this case, we're talking permanent, albeit mild. > It's possible this is related to the darkening screen corners issue, but I > don't really think so (it should affect the whole screen then, or at least > affect the menubar area more than the bottom corners). I suspect that > actually has something to do with the state of each pixel's neighbours, as > in a simple 1D or 2D neural network (or the game of Life). The ducks on the > ends have to keep one eye open. ;) Based on the comments in this thread, I did a little web searching for references on TFT burn-in, etc. I think what we're seeing is a form of what is apparently referred to as "image sticking". I'm not enough of an EE to understand the references, but it appears that the phenomenon is connected to "improper balancing of the voltages across the liquid crystal cells." (Whatever that means.) I'm also starting to wonder if a worthwhile experiment would be to run some kind of screen saver,specifically one which keeps the corners changing, to see if it makes a difference. <<<john>>> ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> RoadTools $30 PodiumPad available at Apple retail stores, $20 Traveler CoolPad at Staples. Both in white for iBooks at <http://roadtools.com> Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
