The handshake is unsuccessful either initially, or when it is re-checked after channel has already been established (ie your in the middle of your favourite soap or newscast). Minute variances in tolerance will cause the connection to fail when it falls below a tolerable level. Without going in depth into why this happens, suffice it to say it just does. Now it may even be that the old cable actually worked perfectly for ten minutes, an hour, or even a day, then suddenly it stopped working, and you think waahh it was working fine its not the cable, but in fact it is.
#NO SIGNAL ON TV SAMSUNG TV#
For example! You may have had a HDMI 1.4 (or lower) cable which worked perfectly with your older HD 1080 TV but you’ve now got a UHD TV which requires an HDMI 2.0 compatible cable (higher bandwidth for the most part) but you’ve not changed the cable. In my experience this is most often cable related. The handshake happens so that a connection between the source and your TV can be established, and a channel for the communication of you signal can form… ie you can see the picture from your film player, service provider or picture source.
There are a number of issues that can cause this problem, but essentially it happens when the HDMI handshake fails. Oh, and I then chatted with another samsung person and she said the guy I had previously chatted with needed additional training and she would tell her manager about him. But why the Samsung tech support person didn't give me this info is what I couldn't understand and then I get the solution from a guy my age (61) at a Best Buy! Anyway, thought some of you might be interested in this info and update. We figured out that the front of the tv at the bottom right there has nothing written there, just the sleek black frame around the flat screen, but we began pushing on the front in different places and, voila, the "source" choices showed up on the tv screen and then we had cable back again!! Going to return the remote we just bought and never opened.
#NO SIGNAL ON TV SAMSUNG MANUAL#
Store guy said I had to get the programmable remote but then he showed me the buttons on the back of the samsung tv's in their store that work also as a "source" button! I had never seen a power button or any other button on the back or along the bottom of our tv, so I bought the $76 remote and on the way home, my spouse says "lets look at the user manual again to see if there are buttons somewhere we couldn't see. So I called Best Buy the next morning (Saturday) to see if they had it they only told me they have "universal" remotes. After live chatting with a samsung tech support guy for half hour late Friday night, and he saying I needed a samsung remote (which I had lost in a move two yrs ago), so I could use the "SOURCE" button to go between cable and HDMI, etc. I suggest turning off "Input Signal Plus" first to see if that alone gets your picture working and then swapping the cables only if necessary.Well, I finally had success the next day, getting back to being able to view our regular cable programming channels. These two trick solved my problem immediately.
You may need to power cycle the AppleTV and TV after each change. I upgraded the HDMI cable connected between the TV and the AppleTV to an Ultra high speed, 48Gbps certified HDMI cable. In the Samsung TV menu under external device control, I turned off the "Input Signal Plus" setting for the HDMI port my AppleTV was connected to. All other sources hooked to the TV (DVD, DirecTV etc) worked fine but the AppleTV signal would not come in or would only stay visible for a few minutes before I got a no signal warning and a blue screen. I had a no signal error with a brand new Samsung AUD800 4K TV and an AppleTV (4th Gen). Unfortunately it's like Apple and Samsung don't care or don't want to address an issues with hardware incompatibility between their brands. Hopefully this helps, I searched FOREVER to find this simple solution.