Ice build up behind ice maker ,water chute frozen up

Unplugged ref.,turnned water off at wall and drained, removed back cover on lower part of ref. then removed screw holding water valve,unplugged both wires from unit,pulled the 3 water lines off,1 I had to cut, would not release,got new water valve,push 3 water lines in place,attached the 2 wires in place and screwed unit back on ref.and replaced back cover on ref. Then I got a hair dryer and thawed all ice that had built up behind and under ice maker in freezer,cleaned that mess up,turned water back on plugged in ref. All good ,repaired problem,old water valve was bad.