Locate the screws holding the lock in place on the inside of the door.
How to fix door lock on room door.
Remove one of the screws on the jamb side of the hinge and drive in a 3 in.
Tap the end of a chisel under the door stop on.
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Remove the old lock.
How to fix a door that will not lock.
If you break off a screw head or strip it use an inexpensive device called a screw extractor to remove it.
Tighten the hinges first if you find that the latch contacts the strike plate too high or too low make sure all the door s hinge screws are tight.
If not there is more to look for.
If the malfunctioning lock is in the door handle there will be at least two screws securing the door handle to the door.
In most cases the problem is now fixed.
Tighten the screws that go into the door and the screws that go into the door frame.
Tighten any that might be loose and then check the door again.
Repairs range from making minor latch adjustments to repositioning the door.
Shut the door and try to lock it.
This serves as a great lubricant for locks.
A sticky lock can be annoying.
Do not over tighten the screws or you may strip break them.
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After squeezing the powder in use your key a few times in the door to get the lubricant spread to the components.
Remove these screws unscrew one side of the door knob and pull the door handle and lock assembly out of the door.
Slide the latch in and out to see if it moves smoothly and if not the door knob may be too tight.
That s the small rectangular brass plate on the jamb that the striker slips into.
The striker plate is.
Try using some graphite powder in the lock.
Examine the striker plate.
If that doesn t solve the problem try this trick.
Loosen the knobs a little to relieve some of the pressure on the door and to free up the latch a little.
Tighten the hinge screws and then try adjusting the strike plate by loosening its screws and shifting it slightly.