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I recently moved my Samsung from one room to another. It worked great prior to moving it. Now the color is good but it has developed small wavy black lines. They run horizonally and later become diagonal.
Has anyone experienced this or have a suggestion as how to eliminate these black lines?

If this is a DLP, than there is a good chance that the DLP chip is starting to get bad. you might need to replace the DMD or the light engine.