The S4 monitor only flashes Zeros - what can I do?

  • Sensor may have picked up dust – use a can of compressed air to clean out any dust and debris on the sensor disk
  • Realign the Top Deck
  • Check the sensor disk’s alignment
  • Check the wire connections
  • Check for damage on the sensor disk – i.e. missing/broken sensor disk teeth (shown below). If damaged, replace the sensor disk
  • Check for damage on the sensor. If damaged, replace the sensor
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