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| I actually have disproven the cold lightbar theory this week, had one do it when it was 70+ outside. BUT, I did get a fix for the problem (atleast it worked on all 4 500's I have had this problem with. Procedure is unplug unit, then before plugging it in, push and hold all 3 buttons on the front face on the left side of the screen. Keep holding buttons until the start up splash screen "freezes" unplug unit, let sit a couple minutes plug it back in and wala. this procedure sets the unit back to factory settings. kind of a reboot. It resets every thing but the backlight comes back on. got this from AL. | |
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