A method comprising: providing access to a multi-panel display comprising a plurality of display panels, each panel of the plurality of display panels being mounted onto a mechanical support structure; identifying a defective panel from the plurality of display panels, wherein identifying the defective panel comprises receiving a signal from an adjacent panel indicating the defect; without powering down the multi-panel display, disconnecting electrical connection to the defective panel and removing the defective panel from the mechanical support structure; attaching a replacement display panel to the mechanical support structure at the location of the defective panel; and connecting power to the replacement display panel, wherein one or more of the remaining of the plurality of display panels continue to display during the time the defective panel is disconnected and removed, and the replacement display is attached. view more

The panel of claim 1, wherein the first thermally conductive material comprises plastic.

A modular display panel comprising: a first side and a second side opposite to the first side, wherein the first side of the modular display panel comprises a display surface of the modular display panel; attachment points for use in attachment as part of a multi-panel modular display; a plastic casing comprising an outer surface of the modular display panel, the outer surface being part of the second side of the modular display panel; a recess disposed in the plastic casing; a printed circuit board disposed in the recess, the printed circuit board comprising a front side and an opposite back side, wherein the recess surrounds the opposite back side of the printed circuit board; a plurality of LEDs arranged as pixels attached to the front side of the printed circuit board, wherein the pixels are arranged in a rectangular array comprising at least fifty pixels; a sealing compound disposed over the front side of the printed circuit board; a framework of louvers disposed over the front side of the printed circuit board between rows of the plurality of LEDs, a circuit for controlling the plurality of LEDs, the circuit being attached to the opposite back side of the printed circuit board; a power supply for powering the plurality of LEDs, the power supply mounted over the outer surface of the modular display panel, wherein the power supply comprises an alternating current/direct current (AC/DC) converter, and wherein the power supply is configured to receive AC power and output DC power to the plurality of LEDs; wherein the front side of the printed circuit board is sealed to be waterproof by the sealing compound and the plastic casing is sealed to be waterproof so that the modular display panel is sealed to be waterproof; wherein the modular display panel is configured to be exposed to an external environment without a protective waterproof enclosure; and wherein the modular display panel is configured to be cooled passively without fans. view more