Hi guys! So, I have an almera N16 -04 with the integrated satnav and CY460 stereo. The stereo randomly cuts all audio and start to put out some kind of gray noise. This noise doesn't stop even if I turn off the ignition. I am not sure, but I also think that the noise can start even with the car turned off, as I have experienced a dry battery in the morning. I currently just leave the unit completely unplugged, so it does not drain the battery. I am prepared to install an aftermarket unit or to by a OEM refurbished unit that is factory reset. However, I need to know if the problem is caused by the unit or by a faulty ground. What do you guys think? Thanks!