| I got the problem you got yesterday. I'm not exactly sure why it occurred though. My screen went really dark when I was washing the car yesterday. I noticed it right after I cleaned my windows.
The unit was really hot. The bad hot for electonics. I'll run the unit for hours, and it does heat up some, but this was twice as hot as that. So it could have just been the sun beating on it. THe other possibly was some window cleaner got inside the unit. I thought I did a good job not spraying the unit. I'm not sure if I did spray it or not.
I took the unit out, left in the house and let it cool down. An hour later when I went to work, the unit was fine. No problems with it at work, and it was running for about 9.5 hours in the boombox. | 
