DUDU-Meng yes it has resolved it's self but before it was resolved I reset the headunit and checked if the switch for the power always on, and it was off. The next day at work went to lunch and it started working fine. Also thank you for all your help with this head unit, this is the best head unit I've seen and used in 20yrs thank you for all you and your crew do! Dudu7 top of the line product