Ok, then the flickering should caused by one of the boards... Check if the problem happens with all the inputs.
Also access the service menu (Your TV needs to be in Stand by mode) by pressing "Mute", 1, 8, 2, "Power". Select DDP1011 → TEST PATTERN → Press the right arrow key. Test all of the color patterns, if one or more of these patterns are flickering then your DMD board could be the problem.
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