I have a samsung dlp tv model # HLP5685W i was watching it on day and in the middle of a movie purplish and greenish thin line appeared on screen the line are more visible when the screen is bright i have a samsung dlp tv model # HLP5685W i was watching it on day and in the middle of a movie purplish and greenish thin line appeared on screen the line are more visible when the screen is bright no some much when the scene in movie is dark. it appears in all screens(ie sources hdmi, dvd etc) and on menu had a repairman come in and told me to

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I would suspect a failure of the DMD Module. This is right in the center of the Lens area of the TV and has a small fan right behind the module. This is the video processing area of this TV and controls what the lens is sending out to the mirror and screen assembly. If this does appear on all devices, then I would not expect that anything outside the TV would cause your problem. A part number beginning with BN-94 or BN-96 should be found to order a replacement part. Often, these parts can be found on e-Bay.
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