Communications Specialties Fiberlink RA-1400A-1 DC Level Receiver 154222859213 but it just won't turn

but it just won't turn on

Manufacturer Manfrotto Model Number 547B SKU 19-38879 Ref 23-91244

Manufacturer Thermo Scientific Model Number 66383 SKU 19-63754 Ref 23-90302

This Valere Power CS2500A1-EX has been tested working

Communications Specialties Fiberlink RA-1400A-1 DC Level Receiver 154222859213 but it just won't turnCondition Used Description This Receiver has been tested working onsite and is guaranteed. The Receiver has wear from previous use including scuffs and scratches. The wear is only physical and does not affect the functionality of the Receiver. Includes only the Receiver and power supply, No additional accessories. Quantity listing with reference photo, you may not receive the actual item pictured. Inventory is on hand and ready to ship. Please feel