first I wrote: >>> I've got a _good_ Duo 250 TFT display >>> I'm going to try on my 2300, which with >>> a previous 280 TFT screen had done the >>> darkening corner thing.
then Tom Lee wrote: > The gradual and nonuniform diffuse > darkening that Kai's photo shows is > something else. I think that some months > (maybe a year) ago, someone on this list > offered his theory that there might be > some contamination that poisons the liquid > crystal material. If bad seals are to > blame, then it would make sense that the > problem would first show up near the > edges. Since Kai notices this darkening > even with the backlight off, that theory > might looks stronger. Well, I had figured as much and my test, while it doesn't actually confirm this, is at least consistant with it. Since the spread of the darkening is very 'organic', that is, uneven and gradual, leaky corners and edges seem as good an explanation as any. So last night I put my known-good mono TFT Duo 250 screen on my 2300c, (see my quote above), ran it continuously overnight and in the morning was pleased to find it still clear and non-darkened. As I say, this doesn't prove anything, but does support the idea that the screen itself is the problem. I have a cracked :-( but still partly working 280 screen I'm letting run right now to see if it will edge-darken. If it does I'll open it up and see what there is to see. Dan K -- 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
