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    Dolphin DX5-S Motor Impeller Makes High Pitch Computer-Like Frequency Noise, Impeller turns for about 1 second and then stops.

    I have a Dolphin DX5-S that would start and work awhile and then shut off, though now it doesn't move. I have gone through and tested all electrical and everything is spot on all the way to the motor assembly. After taking apart there is no water damage inside the motor compartment, cleaned...