Range Rover Classic 1991 central locking problem

I found today that when i go to lock the door from the drivers side it will lock then just the drivers side will unlock again. I tried lockin it from the passenger side and everything works and locks fine.

anyone know whats goin on here?

its probobly part of the push button either worn or getting caught on something.remove the screw in the internal lock handle and the 2 screws in the handle you pull to close the door.theese are hidden beneath 2 grommets inside the handle.all thats holding the panel on now is a series of push fit poppers that come apart easily.dont forget to un clip the speaker wire.give the mechanism a good spray with wd40 to free it out and then wipe clean and coat with vaseline and you will never have that problem again

or take the card off and move the solenoid on its elongated holes untill it works or if it doesnt then get s new solenoid.