MayBee70
It’s pretty old. Inherited from my son. To be honest I could do with replacing it with one that can access other catch-ups but it’s attached to a Humax box that I’ve got recordings on and also a dvd/video player ( I still watch DVD’s). Why does everything change all the time
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I have the same, a non-smart TV (with an Amazon firestick), a BT Humax box and a DVD player.
These currently all work together but the problem when you buy something new is the connections. It can be a nasty shock if things don't connect with each other. Modern TVs are unlikely to have a scart socket for instance (the big one with lots of spikes).
You new TV needs to be able to talk to your old DVD player and this may be tricky. It may require new leads which can transfer signals. So unless you can understand all this or find someone who does, it may be easier to just buy an Amazon Firestick. If you did that then everything could carry on as before, you just stream through the Firestick. That would be the minimum disruption.
Your old TV must have a spare HDMI socket for a Firestick. If it doesn't then say what sockets it does have available.