With my grandpa thankfully it wasn't as bad, though I had to regularly change back the source to HDMI (from STB). Somehow changing that himself was too much, even though he regularly read the teletext. Later, when choosing a new TV I opted for one that accepted a CAM module, obsoleting the cable STB. The simplicity of the remote was also a factor. So a cheap 32" Samsung TV it was. Turned out great. The other choice was a Sony, but my gut feeling about UI was right all along.