Controls Run in a Capillary Gel Electrophoresis Instrument Have Been

Controls run in a capillary gel electrophoresis instrument have been consistently unacceptable. Low signal strength is evidence that the laser is not functioning properly. Which of the following is the correct course of action for the technologist in charge of this piece of equipment?

A) Call the manufacturer, ask that a replacement laser be shipped, remove the old laser, and insert the new laser when it arrives.
B) Scan eBay for a compatible laser, purchase the laser, and replace the old laser with the newly purchased laser.
C) Request a service visit from the manufacturer's technical support team who can safely replace the old laser with a new laser.
D) Tag the instrument for removal and disposal, and order a new instrument from the manufacturer.