With the HL-S5679W, Samsung didn't try to reinvent the wheel, they eliminated it altogether ? the color wheel, that is. Until now, every big-screen TV based on DLP (Digital Light Processing) technology required a color wheel and arc lamp to provide color and illumination. While that system creates crisp, clean high-definition images, a few viewers occasionally notice distracting flashes of color called rainbows. These rainbows are caused by the spinning color wheel. The HL-S5679W doesn't use a color wheel because Samsung found a better solution: LEDs (Light Emitting Diodes). An array of 18 super-bright LEDs ? six red, six green and six blue ? creates vivid, high-contrast images with an ultra-wide color range. The LEDs operate at much higher speed than a color wheel so that rainbow effects are greatly reduced or eliminated. Other LED benefits include cooler, quieter operation and quicker start-up. Like other top-performing big-screen TVs, the 56" HL-S5679W has 1080p resolution. A 720p d