A display apparatus, and a method for the display apparatus. The display apparatus includes a main frame, a magnet movably positioned on the main frame, and a light emitting diode (LED) module assembly detachably positioned on the main frame. The LED module assembly includes a plurality of LED modules, and a support frame on which the plurality of LED modules are installed, the support frame comprising a magnetic material interacting with the magnet. The display apparatus further includes a power cable configured to supply power to the plurality of LED modules, and a cover installed in the main frame to facilitate a connection of the power cable.