Trackspot Bolt Fatal error

I have a Trackspot Bolt, that on power up immediately displays HES, with the Status,Lamp and PSU indicator leds on (steady no Flashing) also the Led on the Logic Board is Green (The Led between R137 and R138). Nothing else happens, no homing nothing, pressing buttons does nothing ( no access to any of the menus, for all intensive purposes the unit is dead, No tension on any of the motors, also echo software does not see the unit.
Any one have any idea's , I am assuming the Logic card is dead.
Thank's in advance

J.P
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