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breakdown of Roller controller clean and rebuild.
Fairly straight forward. Cabling can be de soldered for cleaning. Roller ball clean and lubricate.
One of the better heavy duty roller ball assemblies out there. Long cording allows placement far from the main console and adds storage for 2 standard controllers. Switch provides either roller or standard controller operation.
Power connector is for throughput from main console connector.

Some pics for Colecovision Supercomtroller breakdown
Note; Before disassembly:
note the placement and type of fasteners. mark cable connectors if necessary.
Use a plastic spudger or Slypry to avoid breaking plastic clips.
Note spring placement. Joystick screw securing plastic star is not fully tightened.
Route cable to avoid pinching.
Once stripped, most plastic parts and cable can be cleaned in a dishwasher,avoid heated dry cycle.