6800 backlight issue after flashing new rom.

[MyCellularRepair.com]

Ok.....I've flashed a 6800 from sprint to alltel and configured everything and it all works great w/ the exception of the backlight not working. When I turn off the backlight or if it times out on it's own, it won't come back on! The only way that I can get it working again is to do a soft reset......I've tried flashing the alltel rom file again and it didn't make a difference. The backlight worked fine when it had the sprint rom. Does anyone have any ideas? Has anyone else experienced this problem? Thanks in advance.