Checked all voltage sequence after pressing power button. Found +VDDNB_CORE voltage was missing and beeps shortage on its coil PL23.
Removed coil and found shortage from input side of the coil. Then according to the schematic checked and removed two MOSFETs which was directly connected to the coil one by one and checked their shorting, found one MOSFET's gate G1 and D1 was short and placed other MOSFET back to MB then tested shorting was removed and MB turned ON successfully.
Please see images for components reference.
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