Tranducer switch

I GOT THE HUMMINBIRD SWITCH WHERE YOU CAN USE 2 TRANDUCER ON ONE UNIT BUT NOW IT WANT SWITCH TRANSDUCER HOW CAN THIS BE REPAIR OR WILL I HAVE TO BUY ANOTHER SWITCH ANY TROUBLE SHOOTING WOULD BE HELPFUL OH I UNPLUG BOTH WIRE ON THE SWITCH AT THE SAME TIME NO CHANGE ON SCREEN DONT KNOW WHICH TRANSDUCER I AM USING SO GIVE ME SOME HELP PLEASE.bangheadbanghead

Which model transducer switch is this?
Depending on what the actual failure is; you or someone you know could possibly repair it if it is just a wire broke or loose. Otherwise you should call the Humminbird Customer Resource folks and ask what the repair charge for this switch would be. 1-800-633-1468