HP K382A Waveguide Variable Attenuator Frequency Range 18-26.5 GHz 157128463796 and it would not turn

and it would not turn back on again after pressing the off button

Manufacturer CST Model Number NDPS-24W-T2 SKU 19-26008 Ref 23-32889

Manufacturer Thorlabs Model Number EF504 SKU 19-83575 Ref 23-120942

Manufacturer Flann Microwave Industries Model Number 19110 SKU 19-24620 Ref 23-31130

HP K382A Waveguide Variable Attenuator Frequency Range 18-26.5 GHz 157128463796 and it would not turnCondition Used Description Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. Includes Waveguide Variable Attenuator Frequency Range 18 26. 5 GHz as pictured. No additional items or accessories are included. Photos are of the actual unit for sale. Inventory is on hand and ready to ship. Please