A new screen can be sourced by contacting SMSL. The procedure for changing it involves heating the front glass panel to around 80 degrees C and pulling gently with a suction cup until one corner lifts up, then inserting a plastic pry tool or guitar plectrum and working it gently around until the glass comes free. The LCD itself isn't stuck down and connects via a small ribbon cable with a push-fit connector (similar to changing a phone screen).