amana side by side refrigerator water line inside freezer door leaking

Hello, This is an old refrigeratior/freezer, but everything else works great. water just started dripping from bottom of freezer door. at first it was a very slow leak but leak is getting worse. dispenser and ice maker work fine. exposed tubing going into door looks to be in good shape so must be a crack in tubing inside freezer door. is it a major repair to replace tubing or can it even be replaced? can I disconnect water going to dispenser but still keep water going to ice maker so it will work?

thanks for your help,
Brad

Disconnect the water line connector and wire connector by the lower door hinge. Remove the upper freezer door hinge. Lift the door off and lay it on a flat surface. Remove the screws behind the door seal then lift the liner and door seal off or slide it over to access the water line. Use 1/4" line.