A couple of thoughts/guesses that occur to me based on the fact that the power supply uses digital signal processing to control the motor:
1)Are the power supply, or its power cord, or its output cable, located in close physical proximity to something that might be radiating significant RFI (radio frequency interference) into it or them? Things like digital audio components, plasma TV's, computers, etc.? If so, try to put as much distance as possible between the power supply and its cables and those devices. Conceivably a burst of RFI occurring at just the wrong time could be causing the DSP circuitry to "crash."
2)As a diagnostic measure, and if readily practicable, you might try running the power supply with its top cover removed. Sometimes marginal conditions in or affecting digital circuitry can be temperature sensitive. Removing the top cover will reduce the operating temperatures of the digital devices.
Hope that helps. Regards,
-- Al
1)Are the power supply, or its power cord, or its output cable, located in close physical proximity to something that might be radiating significant RFI (radio frequency interference) into it or them? Things like digital audio components, plasma TV's, computers, etc.? If so, try to put as much distance as possible between the power supply and its cables and those devices. Conceivably a burst of RFI occurring at just the wrong time could be causing the DSP circuitry to "crash."
2)As a diagnostic measure, and if readily practicable, you might try running the power supply with its top cover removed. Sometimes marginal conditions in or affecting digital circuitry can be temperature sensitive. Removing the top cover will reduce the operating temperatures of the digital devices.
Hope that helps. Regards,
-- Al