Folding corner doors revolutionized cupboards by opening the blind corner which happens when two closets join together. It is not complex, only a piano hinge on the doors to permit one door to lie flat, while the other door opens them as a single. This layout works like a charm until the piano hinge which operates the doors begins to fail. This happens when they get greasy, are exposed to high humidity or even somebody abuses them. One of those doors fails to lie flat and contacts other cupboards before the door is completely open. Replace the hinge to repair it.
Open both doors. Unscrew the hinges that hold the doorways to the cabinets utilizing a drill/driver. They’ll be on a single side attached to the cabinet face frame.
Set the door on a flat surface. Open up them so that the screws holding the piano hinge to the door are facing upward — or backward if the hinge is too damaged to lie flat.
Unscrew each of the screws on the doors and remove the piano. Do not move the doors. Utilize a drill/driver with a No.1 apex suggestion to remove the screws.
Compare and buy an identical piano. Make sure to evaluate the hole layout. Match the holes up so the existing holes in the cupboard doors will fit the hinge.
Set the new hinge where the old one came off. Line up all the holes. Insert 5/8-inch brass screws in the holes and then push them down tight employing the drill/driver along with apex tip.
Hang both doorways back onto the cupboards utilizing exactly the very same hinges and screws as before.