Humminbird Problems

[wassachu]

I purchased a new Humminbird GPS/Fishfinder Model 595C 2 years ago. When I recieved it and turned it on I had a black screen. I returned it to Humminbird, got a new indicator by serial number. Then the GPS didn't work. Returned it to Humminbird. Got a new GPS antenna by serial number. Then the indicator wouldn't accept the Navionics card. The GPS Screen would go blank. I returned it to Humminbird. Got a new indicator by serial number. Then the fish finder started to go from the current depth to 1010. Shut it off/Turn it on it was ok for awhile then back to 1010. Returned it and got a new indicator by serial number. Then my GPS went again. Returned it and got a new GPS antenna by serial number. Then It was fall of 2007 and time to put it to bed for the winter. WILL IT WORK THIS SPRING? Humminbird wouldn't refund my money because I bought it on line. It was too late to return it to the on line dealer. So for $500 I'm stuck with an iffy GPS/Fishfinder. If it works.