You don't mention what model of stereo your Rv is equipped with. However, I'm assuming it's the OEM unit most of us have. These units, in the past, have not been very reliable so replacing it with the same model you have now will probably set you up for the same situation in the future. I've heard there is a new model that some say is a better, more reliable system. If you can afford it, go to a place that that sells quality equipment, like a Sony, or another name brand. BestBuy would be an excellent place to start, just be prepared to spend some $$$$$$ for a quality system.
Days camping (2015)----88 days
Days camping (2016) ---110 days
2016 Wildcat MAXX 28RKX (33' TT), 2007 13' Scamp
2015 Ram Laramie Hemi
30 years RV'ing
12 different RV's