LCD television screens can definitely suffer from burn in. I know of several (all good quality brands) that exhibit this problem. Most televisions won't be used in a way that burn in will become obvious, but If used as a computer monitor or with a game system, the LCDs may begin to suffer burn in from things such as the Windows desktop or gaming HUDs which remain on screen for long periods of time.
Maybe you should periodically invert the display or cycle the colors.
I think the brightness adjustment just controls the backlight. I wouldn't think turning it down would affect the LCD.
The burn doesn't really affect my use too much, since I bought these units for single purpose use, but most people would probably consider the test unit damaged now as the big 7-segment pattern is clearly noticeable when other software is running. The alarm version is running mostly green or red instead of white. Of course, the clock being software I wrote, there are options. Inverting instead of changing color when the alarm is not set would probably go a long way toward evening out the wear.
The thing is, these things were sold as computers and shipped with a desktop background with that ugly blazing white WINDOWS CE logo smack in the middle of the display, and most of the things you'd use these for do involve fixed background components like the IE toolbars. I suspect Sylvania just didn't envision them being run 24/7.
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Maybe you should periodically invert the display or cycle the colors.
The burn doesn't really affect my use too much, since I bought these units for single purpose use, but most people would probably consider the test unit damaged now as the big 7-segment pattern is clearly noticeable when other software is running. The alarm version is running mostly green or red instead of white. Of course, the clock being software I wrote, there are options. Inverting instead of changing color when the alarm is not set would probably go a long way toward evening out the wear.
The thing is, these things were sold as computers and shipped with a desktop background with that ugly blazing white WINDOWS CE logo smack in the middle of the display, and most of the things you'd use these for do involve fixed background components like the IE toolbars. I suspect Sylvania just didn't envision them being run 24/7.
http://geektrio.net/?p=1979
BTW, I do admit that at $30 for the unit, even Windows CE might be fun to play with.