Hello all! I'm having real issues with an LG 4k TV (40UB800V) and wondering if I could get a second opinion. Basically, I just bought a Samsung 4k Blu Ray player (UBD-M7500) to play UHD discs on the TV and actually benefit from it being a 4k TV. However in the settings of the blu ray player as soon as you change the res to 2160p the TV screen goes black and says "no signal" then of course a few seconds later it reverts back to regular 1080p. Tried with 4 or 5 completely different HDMI cables, including a brand new one from Currys, in all the different ports. Our regular blu ray player works fine over hdmi (in all the ports, too). When I plug the PC in over HDMI I can wack the resolution all the up to 4k (2160) just fine. No signal issue. I think I'm answering my own question but is this just the case that the TV is not compatible with this 4k player; as I read on the LG website it warns "Some devices may have compatibility issues, such as some of the new 4K Blu-ray Players connected to our 4KTVs. It's possible the HDMI HDCP Handshake may be timing out (rare, but it could happen)" is that this issue?? I am so dissapointed with this TV. The YouTube App is locked at 720p, the menu isn't at all customiseable and now when we get around to actually wanting to use a 4k player with it, it's incapable of doing even that. Or, am I missing something? I read online that I could buy a splitter which would strip the HDCP, but my understanding is that because its 4k the strippers don't support [email protected] 30hz? does this make a difference? Help! Perhaps we should just sell it and buy a new 4K TV that isn't rubbish!?