Hello I have a 2008 Tucson limited with a factory (9611p6) head unit. The stereo keeps losing power and shutting off at random, when it shuts off it will power back on with the power button but also loses any presets settings it had before. When the radio does work even at max volume it's not loud at all and about 1/3 as loud as any other car stereo I've used. I have checked any fuses in the driver compartment fuse box and also under the hood, even checked the connections going into the factory amp next to the spare tire. Any suggestions to the problem would great be appreciated.