Agilent 6553A D.C. Power Supply 0-35V 0-15A

Agilent 6553A D.C. Power Supply 0-35V 0-15A. Good condition with a small chip on upper right side of plastic face (view the gallery images) not visible from front of unit. Unit powers on and checks O.K. with load resistor. No options (GPIB/RS232 etc.). Voltage adjustment rotary encoder is loose and functions poorly. Current limit rotary encoder – O.K.  Front panel voltage and current keypad entry – O.K. No manual, cables or other accessories. 120 Volts A.C. only. As shown.