Please help me. This is a t-con board fault ?
This is tipical Samsung LCD panel defect. Watch this: https://www.youtube.com/watch?v=j7vl7-vZEL8
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I think this problem is not t-con modul. First time I check the main board. This set has own test picture and sound. In the costumer menu switch on this funcion. In this time the processor send a test picture to the display via LVDS cable. If the test picture is well then problem is the processor or RAMs. If the test picture is bad also, then I check the t-con modul or LVDS connection or the cable.