on the unit? or do you know ? hummingbirds are notorious for breaking pins on connectors . i had similar situation as yours ( when i first started yakking , along time ago
) i got away with only replacing power cord . if it is trashed , and you are going to replace the unit ? needless to say it is about money and how much you can afford .bass pro had a unit on sale and just about every lowrance unit is on sale at west marine . good luck . personally i like down scan.