My head unit started acting wierd the other day. When left off for an extended period of time, like over night, I start up the truck and the radio is off. So I turn it on and it's on 590 AM and the clock is at 12:00 like it lost power, however all my presets are still saved. But when my truck is off for only a couple hours it's fine. Any ideas?

 

I noticed that a stock cd cass radio MACH will hold all
its settings including bass treb and channels when total
power was removed from the radio. Your HU may do the
same