iMac Intel 21.5" EMC 2428 LED Driver Board Replacement

Stick a suction cup near each of the two top corners of the glass panel.

If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent.

Gently lift the glass panel perpendicular to the face of the LCD enough to clear the steel mounting pins attached along the underside of the top edge of the glass panel.

Pull the glass panel away from the lower edge of the iMac and carefully set it aside.

Remove the eight 8 mm T10 Torx screws securing the display to the outer case.

Slightly lift the top edge of the display out of the outer case.

Pull the vertical sync cable connector out of its socket on the LED driver board near the top left corner of your iMac.

Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board.

Grab the plastic pull tab secured to the display data cable lock and rotate it towards upwards.

Pull the display data cable straight out of its socket on the logic board.

Disconnect the LCD thermal sensor cable connector from its socket on the logic board.

Carefully pull the display toward the top edge of your iMac and lift it out of the outer case, minding any cables that may get caught.

Remove the two 9 mm T10 Torx screws securing the LED driver board to the outer case.

Lift the LED driver board out of its recess in the outer case, minding the DC-In cable still attaching it to the power supply.

Disconnect the DC-In cable by depressing the locking mechanism while pulling the connector away from its socket on the LED driver board.