Good morning colleagues, I have a Samsung UN40H4200AK led tv which has a faulty start because it turns on, shows the logo (sometimes the logo image appears inverted), then disappears and the screen is black with the backlight ON ... There is no sound, no remote control responds, no rear panel responds ... nothing. as if it were hanging ..... I measured tensions Source, Main, and T-Con, and all are well. check welds in case they looked cold or cut, I solved some at the source, but nothing ... The main board is BN94-07319C I can't think of what else to do ... Can it be SOFTWARE ..? Any idea what else I can do? Thank you so much... attached photos https://drive.google.com/drive/folders/1W46ch8Lnxtifjg8m5y4Jz76Gdnvc1cMO?usp=sharing