12-04-2009 12:21 PM
I am having a similar issue with my week old 9550.
When in the dark or poor lighting conditions the back light will not come on at all when tapped to 'wake up'. I shone a flashlight on the screen and the screen is active but without the back light nothing can be seen. Sounds can be heard if you happen to mash your way into the phone app or something else that makes sounds.
My workaround for time being was to alter the screen settings to: Auto Dim Backlight = off
Now when the alarm wakes me up in the dark I can tap the screen and find the off button.
*If anyone feels this is a sensor issue and not software please let me know so I can return the unit. My first BB so still learning the ropes - so far I love this unit!!