As the title indicates, I recently purchased a new Mingwei switch power supply. When connected to a dummy load and using other operating modes at high power output, everything works normally. However, when operating in CW mode, the power supply emits intermittent "dada" sounds. I'm wondering if this is a common issue or if there might be something wrong with my particular unit. I'm considering whether to return it for a refund or replacement. Thank you!
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