Hi, I have a relatively new Dyson DC19 and the

SOURCE: fitting internal bin catch on dco7

Yea I can definitely help you. On the tope of the cyclone there are three screws that will allow you to take off the top off the cyclone. You should see a long black rod going down the middle of the cylcone. It is difficult and you may have to detach it from the top i cant remember as usually i just replace the whole thing and only done that 3 times. You take a flash light and you can see where the rod goes in and just push it down and it should pop open. ill check back on monday to see if you replied or need more help.

SOURCE: I can not open my dyson canister to empty it

if you take the bin off of the unit and try to pull the release trigger and it feel vry lose then you will find that the connector rod inside the cyclone has broken you will need to replace the cyclone unit as the rod comes complete with the cyclone

SOURCE: Dyson DC07 Clear Bin Flap will not release

I just received my replacement root cyclone in the mail today after waiting in the back-ordered status for three months. I positioned a butter knife in between the rubber gasket on the bottom flap lid and the bottom rim of the clear bin at the farthest point from the hinge and slowly and gently wiggled the knife between until the bottom flap just fell open. I examined the rubber gasket and it survived without injury and the bottom flap seals without any gaps...good luck