Creality 4.2.2 Pin Diagram

Is this 8 pin component on the creality 4.2.2 board the buck converter Creality component simultaneously stilll converter shutting buck diagnosing cause running

Is this 8 pin component on the creality 4.2.2 board the buck converter

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Is this 8 pin component on the creality 4.2.2 board the buck converter