Question about Samsung SEK-3500U/ZG UHD Evolution Kit

I had a similar problem with the 4K resolution, so I bought the SEK-3500U/ZG UHD-KIT to go with my TV so I could have the high resolution with the razor sharp picture. But then came the next problem with the TV box, no colours only black and white (grey levels), the picture was visible but with slight picture disturbances (blocks). I then bought a new (expensive) HDMI cable and now it works perfectly, super picture quality. I don't have a UHD player, but it could also be due to the HDMI cable, as very high data rates (up to 18 Gbit/s) are needed for 4K.

Call Samsung support and they will get back to you within 5 minutes :)