HDMI connection issue / SAMSUNG TV and DECODER / Unsupported mode Solved

Question

Good evening,  Yesterday everything was fine, and I'm wondering if I accidentally made a wrong move with my remote because nothing works this morning.  My Samsung TV is connected to my Listo decoder via an HDMI cable. I have two remotes: one for the decoder which I use to connect to the HDMI channel before turning on my TV, then it allows me to select my channels. The other one is for my TV, which I only use to select the source (ext/av/HDMI) and to adjust the sound.  Since this morning, I can no longer access my channels, and I've pressed just about all the buttons on both remotes, unplugged everything (TV and decoder), but nothing works.  Could this be due to an antenna issue (collective antenna of a building)? NB: I am not connected to a Box for TV.   From everything I've read on the forum, it seems that it could be related to the display resolution settings on my TV (I don't understand why suddenly), but in any case: - how do I adjust the resolution since I don't have access to the settings because of this message - how can I possibly reset everything (TV and Decoder)? I wanted to use a Scart cable, but it shows "canal encryption" when I connect my decoder to my TV with the Scart plug...  I really don't know anything about this.   Thank you for your help. Best regards.

Andy31200 · Accepted Answer

Hello, When you turn on your HD TNT adapter and select the corresponding HDMI input on your TV, is the adapter's screen visible?  -- I call a spade a spade *      *in French in the text

SAPHIR13600 · Answer

Good evening,  when I select HDMI, I get a black screen with HDMI in the top left corner and in the middle: "unsupported mode".  I connected a SCART plug to try to access the decoder menu, but nothing works. No input in the menu (therefore no channel selection possible, no reset either)

SAPHIR13600 · Answer

I would add that my LISTO TNT decoder displays "CO42": I don't know if that's normal.

Andy31200 · Answer

Your TNT adapter (not a decoder since the terrestrial channels are unencrypted) has a big problem. Try disconnecting everything, HDMI cable, antenna, and power plug, wait 5 minutes and reconnect. If there’s no result, given the price starting from €20, you have no choice but to replace it.  -- I call a cat a cat *      *in French in the text

SAPHIR13600 · Answer

Good evening and thank you for your response. But I kept searching on forums and I finally solved my problem: indeed, I knew it was a mistake with my remote control (I must have sat on it without realizing) and I accidentally messed up my TV settings.  Actually, it's quite simple: you need to press the GREEN button on the remote control of the TNT adapter/decoder (there are 4: red/green/yellow/blue) and depending on what shows up or not, press it again until you get the picture back and all the channels :)  There you go. Phew. Everything is working again.  Have a good evening.

HDMI connection issue / SAMSUNG TV and DECODER / Unsupported mode

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