Unfortunately the site doesn't seem to cover cordless blinds? In New York they're voluntarily phasing out corded blinds because of safety issues with small children, but the cordless blinds we have are terrible and unreliable.
However they are around 8 years old. When opening the blind, it does not push up as smoothly - it takes a few small pushes versus one smooth, long push.
Not a dealbreaker but it would be nice to know how to fix that.
Edit: Looks like there is a section on some components of cordless blinds.
I expect they aren't as repairable. I have one that I'd like to fix, but I think the end of the cord that came unattached was fixed in place by gluing in the piece it attaches to.
