I'm very sorry to hear about this. Could you try playing a DVD rather than a Blu-ray disc in the player? Let me know the results.
Lately I noticed that my video playback often stops working with my BD player. Both TV and BD player are Samsung and I have not had a problem before. Just in the past 3-4 weeks, I noticed the video / picture is no longer working when trying to use the BD player. When a disc is playing, I receive the audio from the TV speakers but no video. I have tried the resolution settings, picture modes, switching HDMI cable, etc on TV and am somewhat perplexed. The TV screen is working fine with Cable tv.
TV : UN46C6300
Player : BD-D5500