61" Samsung DLP. model HL-T6187SA. Service tech told the original owner that the problem is with the DMD board. WHile I can't troubleshoot, i can change parts and am thinking about trying to find that board somewhere and change it. My question is: do any of you know if the DMD board would likely be the culprit for there being a black band onscreen? Attached is a pic of the issue. The tech said the part is $230 but if I do it myself I first have to figure out where to buy the part.
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