Roller blinds function with a roller and spring and after awhile the mechanism can cease to work properly. These blinds come in a variety of materials such as fabric and bamboo. Fixing the blinds can be a more economical than purchase a new unit. It is possible to repair these blinds with a few tools rather than hiring a professional to complete the job.
Tighten spring tension by lowering the blinds halfway with the pull cord and lift the blinds out of the brackets. Hand roll the blinds all the way to the top. Place the blinds back in the wall and repeat this method until the spring tension seems correct.