I would expect a 'fuse resistor' to be open circuit, something easily found with a multimeter. First check if there is any activity at all in the supply by looking (metering) for any voltages on the board. Then look for a low-value resistor open-circuit.
Give the board to someone with experience if you have no clue - and be aware that voltages exist on the supply primary side which can and will kill you.
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