Need help either buying a used Simrad CX44 or getting the one I have fixed. I brought it to Commercial Marine Electronics and they said they can't get the part for it. Apparently it is the mother board, so I called Simrad and they told me they don't fix or have parts for those units and it is useless. They wanted to sell me a new unit that would not work with the other Simrad electronics(radar, sounder etc). So I'm either going to have to purchase a whole new system or find a used Simrad CX44. Thanks for any help you can privide.