Went out yesterday and used my Lowrance Elite5xDSI for only the second time since I purchased it and had it installed last fall, after being on about an hour it suddenly goes off. I tried turning it back on and it comes on only for a second and very dimly at that, then goes off again. I wait about 5 to 10 minutes and try again, this time it come on and stays on for about an 1.5 hours then repeats the same going off againbanghead. I repeat the cycle 3-4 times yesterday, Could there be a short in the wiring or is could the unit possibly be defective? Thanks for all your advise and input.