When packaged for shipment, the slats of your blind are in the fully raised position. Because of this, when you first try to lower your blind, the cord lock may not release, preventing the slats from lowering. First, you should hang the blind in the window. Second, hold your lift cords level with the headrail and gently pull. This should release the cord lock. If this does not fix the problem, take your blind out of the window. Locate the cord lock mechanism in the headrail (the lift cords run through this). You will see a pin. Using a flat head (be careful to avoid contact with the cording) screwdriver, turn the screwdriver perpendicular to the headrail. Push the pin to disengage the cords. NOTE: As soon as you release the pin, the slats will lower.

Some times the tilt rod can become disconnected from the tilt mechanism in the headrail due to handling during shipment. This causes the tilt mechanism to move while the slats stay in place. To fix this, first remove the blind from the window. When you look at the headrail you will see a metal rod that runs the length of your headrail. You should also see where the tilt mechanism is housed. Gently push the end of the tilt rod back into the space where the tilt mechanism is located. Tip: If you push the rod through, you will get a more secure tilt positioning. Replace the blind in the window.
When the hanging rod does no longer turn smoothly, the problem maybe on the gear on the upper portion of the blinds set. Just simply apply a little of lubricant in it so it will again turn smoothly.
 

Remove your blind from the window. If you have a wand tilt, remove the wand. If you have a cord tilt, remove the tassels. Next, remove a metal end piece or plastic end cap from the headrail. Slide the tilt rod out just enough to clear the tilter. Then replace the tilter and gently push down until it snaps back into place. Try operating the tilter shaft until the flat portion of the tilter rod lines up with the flat portion inside the tilter. Now you can push the rod back through the tilter and replace the end cap. For a cord tilt, make sure the tassels are even when the blind is in the open position. The tassels must be attached after the cord tilter has been installed.

If the cords are not broken, you do not have to remove the blind. Begin by removing the ladder cap from the under side of the bottom rail. Now that the ends of the cords are exposed within the bottomrail, pull them out slightly. Cut the old cord above the knot and weld the ends of the old and new cord together using a lighter or match. Roll the joined cords between your fingers to create a smooth weld. From the cordlock side, gently pull the tassel toward the left and this will pull the new cording through the same path. When the cording gets to the desired length for the controls to be, tie a knot in the ends by the bottomrail and cut off the excess. Replace the tassel and repeat process for additional cords.

Start by removing the ladder cap from the under side of the bottom rail. This will expose the ends of the cords, which you can then pull out slightly. Cut the cord just above the knot and then pull the cord up through the last damaged slat. Remove the slats and replace them with the new ones, making sure that you insert the slats so that the route holes are aligned with the existing slats. Then weave the cords through the route holes being certain to alternate the sides of the ladder rungs as you proceed down the blind. Reinsert the cords into the bottom rail and tie them off. Replace caps.