If the cords still don t pull or adjust the height of your blinds then you may need to force the lock mechanism open.
Fix venetian blind tilt cord.
Tilt cord is simply threaded over pulley and out.
They are fairly easy to repair.
Use these directions to replace a tilted cord.
Venetian blind repair guides venetian blinds are also known as aluminum blinds 2 blinds and horizontal blinds.
Pull the cord toward you and cut the knot off the end of the cord.
When you pull the cord to tilt the slats and the slats do not tilt that indicates that the tilt mechanism is broken and needs to be replaced.
Lift the bottom of your blinds even if they are already stuck at the top near the headrail.
Slip cord pulls over ends of cord and knot ends to hold the pulls on.
You can do this with your hands and fingers.
Untie or cut off knots at ends of tilt cord and remove pulls.
The cord tilting string is broken uneven or pulled out.
Look for the end of the cord where it is tied in a knot.
If the cord is broken or missing replace the cord with a new piece.
We recommend using a cord with a 1 4mm diameter.
If this doesn t release the cord lock then you will have to take the blind out of the window frame.
The most common repairs include replacing broken tilt mechanisms replacing broken strings and replacing broken valance clips.
Your first instinct might be to yank the cord and force the blind down but this can just cause further damage.