The patchbox.one / RewindCTRL can be used to replace a cable within a patchbox.one / Cassette.
Below you can find a video instruction on how to open the cassette with the RewindCTRL and on how to replace the cable.
Important Note: While it is possible to replace the cable with the RewindCTRL, opening a cassette also voids the warranty as the entire cassette and its mechanism has to be taken apart.