Single-light PCB rapid diagnosis instrument

The invention discloses a single-light PCB rapid diagnosis instrument, belongs to the technical field of detection, and solves the technical problems that PCB detection equipment in the prior art is large in size, large in mass, poor in mobility, inflexible in observation, inconvenient to store, high in material cost and incapable of being matched with a microscope for use. The device comprises a support main body and a machine head, wherein the support main body is connected with the machine head through a connecting rod; the bracket main body comprises a bracket main body bottom cover, a first middle shell, a second middle shell and a bracket main body upper cover which are arranged on the bottom surface; the first middle shell is fixed on the support body bottom cover in a buckling mode, the second middle shell is sleeved with the first middle shell, the support body upper cover is sleeved with the second middle shell, and limiting devices are arranged at the end point connecting positions of the first mid