I just bought a lowrance x-125 last spring and the sucker is not working already. I think it may be done altogether already before even one full fishing season. I've norrowed it down to either the unit itself (fishfinder unit that is), or the power cable. Are there any suggestions on why I'm not getting any power???? Everything looks to be in good shape it just don't work. I've wiggled th cable around while hitting the power button and nothing Should I just try and return the darn thing?