If by Desk Drawer, you mean the pull-out desk under the TV, on the side of the left and right drawer extensions you will see a black lever. One one side, the lever is to be held in the up position and on the other side, it is to be held in the lower position.
- First, pull the drawer all the way out to the fully extended position
- Then use your fingers to move the black levers up or down
- While holding those levers in their opposite states, have someone pull out on the drawer, but not too far
- Once you feel the drawer has been pulled a few inches past its previous fully-extended length, carefully remove the drawer all the way and set it aside to do your latch re-work