Diagnosis
The hinge mechanism or the plate alignment is out. This is often caused by dropping the iron, forcing it closed on a thick clip, or general wear on the pivot points.
How to Fix It
First, inspect for visible obstruction.
1. With the iron unplugged and cold, open and close it slowly. Look for any hair, debris, or a damaged clip stuck in the hinge or between the plates at the tip.
2. Check if the plates themselves are visibly warped or chipped.
3. Gently try to realign the arms by applying even pressure to the sides while closed—sometimes they can snap back into place if the misalignment is minor.
If That Didn't Work
The internal spring or hinge mechanism is likely damaged. This is a structural flaw that isn't repairable at home without risking complete breakage.
Heads Up
Using an iron with misaligned plates will give inconsistent results, pull hair, and can cause more heat damage because sections aren't clamped evenly.