Do not over tighten the screws or you may strip break them.
How to fix door lock on room door.
If the malfunctioning lock is in the door handle there will be at least two screws securing the door handle to 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.
Loosen the knobs a little to relieve some of the pressure on the door and to free up the latch a little.
Examine the striker plate.
Locate the screws holding the lock in place on the inside of the door.
If that doesn t solve the problem try this trick.
If it won t lock open the door.
Shut the door and try to lock it.
This serves as a great lubricant for locks.
Door lock doesn t latch properly when a door latch doesn t click into position it usually means the latch and the strike plate are out of alignment.
A sticky lock can be annoying.
If it latches securely the problem is solved.
Tighten the hinge screws and then try adjusting the strike plate by loosening its screws and shifting it slightly.
How to fix a door that will not lock.
The striker plate is.
After squeezing the powder in use your key a few times in the door to get the lubricant spread to the components.
Tap the end of a chisel under the door stop on.
Tighten any that might be loose and then check the door again.
Tighten the screws that go into the door and the screws that go into the door frame.
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In most cases the problem is now fixed.
Remove these screws unscrew one side of the door knob and pull the door handle and lock assembly out of the door.
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Try using some graphite powder in the lock.
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.
Remove the old lock.