Hi, I am trying my luck on this forum to find a component for my WAC3500. It is a component that sits on the bottom side of the top PCB when you open the device. I have added pictures from the top and bottom side of the PCB and marked the component that is missing. The component actually blew up and I cannot read anymore what was on it. On the PCB it is marked "1604" and has 4 connections to be soldered.

Thanks for any hints or even a schematic,

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