| submitted by /u/I_H8_GM
I get calls like this all the time. It’s always worse when the customer has been poking, prodding and scraping at things. Just bite the bullet and call a locksmith because this requires specialist tools. They will also tell you what’s needed to stop it happening again, because there is almost always an underlying cause when a key snaps.
I should add that I don’t know which type of lock it is, a deadbolt/springbolt/or nightlatch or what the difference is between those. The lock can be opened from the inside by pulling down on the handle. It locks when the door is shut. To unlock from outside you have to insert the key (tooth-side facing up) and then turn to the right about 20-45° the lock then pops open. It’s difficult to see in the picture but this is a Yale lock
Common fault with these. If the snib (small button-like thing) won’t move, there’s nothing she can do except call a locksmith. They will drill from the outside, release and replace. If it’s ground floor, they should try to climb through a window and do it from inside as it will save the cylinder.
You friend should take a video that shows it’s jammed and screenshot her phone’s call log to prove that she attempted to contact the landlord.
Expect to pay a total of £150-£200 or so to have this done tonight. It should all be recoverable from the landlord but if you have trouble with that, post on r/legaladviceuk
Make sure you get a full price over the phone from the locksmith and follow the advice in the sidebar to see how to find a good one. Easy to quote this from photos so don’t put up with any nonsense from people that tell you they have to wait until they are on site.
(I’ve assumed UK, judging by the your lock)
Take handle to a locksmith, should be able to get that core out and a new one in. If you are a locksmith, drill, count the cylinders, stop before you get to the control pin, spin, extract like normal. Not worth the time doing a key extraction or anything else, that cylinder is done.
That’s definitely for a detent, not a set screw. This is probably a Defiant or some other cheapo knob.
OP: The detent probably isn’t in line with that little hole so to be able to press it you will likely have to rotate the knob CW or CCW in order to be able to push it in.
How do I remove the handle from Callan Asheville doorknob to rekey? Turning the key 90 degrees and depressing the slot doesn't work.