If the lock cylinder is stuck and won't turn, you can try the following methods to fix the problem:
1.Try spraying lubricant: Use some lubricant specific to the cylinder and spray it into the cylinder hole. Lubricants can help reduce friction and make the lock cylinder easier to turn. Take care to avoid using impurity oils or motor oils as they may cause more problems.
2.Gently shake the key: Insert the key gently into the cylinder and shake it gently, trying to release any jammed parts. Be careful not to use excessive force to avoid bending or damaging the key.
3.Use a key lifter: A key lifter is a special tool that can be used to try to unjam a lock cylinder. Insert the key lifter into the cylinder hole and try to turn it gently to help the cylinder return to normal.
4.Warm lock cylinders: Lock cylinders often get stuck easily in cold weather or when they are damp. Use a hair dryer or other heating tool to gently heat the lock cylinder to help resolve the jam. Remember not to overheat or put the fire source directly into the cylinder to avoid safety issues.
If the above methods still don't work, it is advisable to seek the help of a professional locksmith. They have more professional tools and experience to solve the problem of stuck lock cylinders and make sure that the lock cylinder or keys are not damaged. Lock cylinder