I'd suggest to pull one of the LED assembly's out of the lamp and look on the circuit board to see if there are some Small Micro Devices soldered onto the board. That will be a regulator circuit and probably the root of your TV interference issue.
If finding a regulator, replace with inexpensive LED panels from China without a regulator. E Bay is a good source and 2011_LED is a known, reputable vendor. I have some unregulated LED panels from him that are on year 5 and all are operating correctly.