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No environmental changes that I am aware of. We have not made any modifications or added any appliances. Since we live in the middle of 80 acres I doubt there are any outside forces at work. We have another TV on the same system with a separate cable box that works fine The boxes have been swapped j...

Update - cart before the horse moment. I started to remove the back of the tv to photo the DMD board and on a whim decided to test the screen with a DVD movie. The DVD movie plays perfectly with no lines or horizontal distortion. Do I still need to look at the DMD? Is the signal process different vi...

Thank you. Based on other posts it sounds like the DMD board. However, another responder wrote that Samsung changed DMD's in October 2006. The TV I have was purchased in November 2006. Should I find a p/n on the existing board to verify the correct p/n or can I assume the model # will reflect the ri...

This was initially mistakenly posted in the projector forum. We have a Samsung HLS4266W about 4 years old. About 6 months ago we began to see thin horizontal black lines, about 4 of them. The issue has gotten progressively worse to the point that we now have many thicker horizontal lines that seem t...

Almost 4 yrs old and started with fine horizontal black lines about 6 months ago. Now the horizontal black lines are thicker and seem to roll and jump around between completely clear to almost completely blocking the picture. (sort of like the horizontal hold setting on older tv's.) Have not replace...