My dolphin is nearly 5 years old and recently quit working. The power supply illuminates but the robot itself was immobile and the impeller fan was not spinning. I took the robot apart to ensure all bearings and rollers turn properly, but it still would not operate. I ordered a replacement cable from amazon and it fixed my robot. The cable was a whopping $165 after tax, but still much cheaper than a replacement robot.
This is the cable: Amazon.com
This is the cable: Amazon.com
