Eppendorf CH-500 HPLC Column Heater With Two Mounting Blocks 156275169833 but will not show input

but will not show input signal on any channels

Manufacturer Mitsubishi Model Number CR751-02VD-0-SA11

Includes Rotating Cylinder as pictured

Manufacturer Oki Data Part Number D22800A Model Number Microline 320 SKU 19-19035 Ref 23-108584

Manufacturer HP / Agilent Model Number E3634A SKU 19-08402 Ref 23-106262

Eppendorf CH-500 HPLC Column Heater With Two Mounting Blocks 156275169833 but will not show inputCondition Used Description This item is fully tested and in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. There are no screws holding the mounting blocks down. Unit is missing one foot. Includes HPLC Column Heater With Two Mounting Blocks as pictured. No additional items or accessories are included. Unless pictured, no power adapter power cable