Dear Sir, I need ur kind guidance regarding the replacement of the arrow pointer bulb of BX51 multihead microscope . I am working at a govt supported pathology lab at afghanistan and responsible for the care of the equipment. I tried to open the side panel of the pointer to whom the intensity control knob is fitted. it was having a power circuit that where the DC supplies comes in. From here i didnt seen the bulb. Do i remove this circuit too to access the pointer bulb? Please guide Regards Alam Sheikh