[suicideneil]

TVS = Transient Voltage Suppressor (I think. It prevents harmful voltage spikes from damaging the caps) . I believe its actually located under the wires between the main + and - attachment points for the battery wires. Im sure a Castle dude will chime in sooner or later and identify the missing component- and then a solution/ redesign will be sought (MMM V4? you never know....).