It's difficult to speculate as to the exact failure from blurry pictures but the solder on that choke (inductor) looks terrible. Something went wrong in manufa

It's difficult to speculate as to the exact failure from blurry pictures but the solder on that choke (inductor) looks terrible. Something went wrong in manufacturing. The solder should have wicked to cover the entire pad, not just a small square, and there should be no (brown) discoloration.