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Hello, Offhand this is an LCD TV not a DLP. To find out what is causing this- I need you to grab the original Samsung remote (not the cable remote and not a universal remote) and press MENU when the screen is green. When the screen is green and MENU is pressed- does the TV's native MENU appear normally over the green screen please?
Do you need further assistance with this?
Okay sounds good. Let me know if you need further assistance.
Okay this indicates the failure in the set is hardware-related and is either caused by a failing power board or LCD controller. Average cost for this repair is in the $200-$250 range and if you'd like you can locate a shop at the kink below:
If you need further assistance let me know. Please do not forget to click the 5 STAR RATING, at the top of the page for my efforts. It is my livelihood and you can follow up at any time if needed.