Hello friends,

My old UPVC front door won't open, as of this morning. The key turns forever, but it is not releasing the lock. It has a multipoint espagnolette lock with 4x mushroom studs, very much like the one in the link below, but perhaps a different make:

http://tinyurl.com/jxlj9qt

The gearbox may have worn out. Is there any way to get it unlocked without destroying the door?

It looks as though the hinges could be released by removing the pin from each, but I'm not sure if that will help, because the mushroom studs will still be engaged at the lock side.

If all else fails, I may be able to get hold of a replacement used door, complete with frame and lock. So if I can't get this jammed door open, I guess I'll have to cut the frame out with a stone cutter and replace the whole door. However, I really hope that won't be necessary.

Many thanks for any help here!

JD