Tv box was switched off at the mains for 3 days now there's no hdmi signal. Other devices are working fine using the same hdmi output, so I doubt it's the TV or cable as I've tried that with different devices also. Is there a certain setting through the TV I haven't activated? The hdmi cable was originally in the back of the router, ive tried both the router and the TV box, still nothing. Any help greatly appreciated 🙏
Yes so the TV is on the wall, hdmi 3 is the only reachable connector, but again none of the hdmi selections are showing any signal so even if I'm mistaken hdmi 1 & 2 still have no signal. The router and TV box weren't touched from the engineer installed it 2 weeks ago. Everything was turned off at the mains. When I was trying to figure out what the issue could be I noticed the hdmi going to the router with a connector on the end, thinking it didn't seem right myself I changed it to the TV box, still no signal from either
It's possible your TV no longer recognises HDMI Port 3 as active.
By 'reachable' do you mean physically, or due to the length of the HDMI cable?
Given your HDMI cable is in 3 it makes sense that you will have 2 others: 1 & 2, they are normally set side by side and you might need to put the cable into one of the others and the TV should identify a new incoming signal.
Given your TV is on the wall it's going to be a fiddly task, but If you can see the cable going into HDMI 3 then with luck you'll see the other two once you remove the cable. Be aware though, some manufacturers split the ports, HDMI & USB so some could be on the other side of the TV.
Usually, once a new incoming signal has been identified, all should be well, but it's a case of try and see, unfortunately.