I have a triton sf21 the Stereo was working fine until I got caught in a storm 2 weeks ago when I got home the speakers were crackling so I unhooked the battery and let the boat sit for 2 days hooked it back up and it worked fine. Got out Friday and the stereo would not power up. I bought a new stereo today and hooked it up and it still won't power up. I checked the fuses and the ground and power wire everything seems to be good. Any suggestions?