Aaarrggghhhhhh!!!!
Let me go back a bit:
I supplied my "supported user" with an HDR-FOX to replace the set-top box, powering an old CRT analogue TV with SCART inputs, and a Harmony 300 to control the Humax and DVD player. All she needed to do was turn on the TV with its switch, power up the Humax, and she had full telly with pause, record, etc. if she wanted to play a DVD, powering up the DVD automatically switched the SCART over, and powering off again brought it back to the Humax. Absolutely fine, except for the small (ish) screen of the steam telly.
So she got a Samsung 32EH5000. Lovely picture, LED backlit, better than mine.
I programmed the Harmony for the TV (one selling point of the Harmony being she would never need to get used to another RC, with the ulterior motive of having the volume and mute controls automatically break through to the TV) and hooked everything up, Humax via HDMI and the DVD via SCART. The SCART continues to auto-switch when the player gets powered up.
The problem is that the TV refuses to "stick" on the HDMI input. Turn it off, and power back on - it defaults to the internal tuner even if the Humax is given time to boot up first. That was OK until she wanted to play a recording - why didn't the media menu appear? (She had been watching the internal tuner.) I tried unplugging the aerial to the TV, and although that means she can't be watching the internal tuner by accident, the process of switching the input to HDMI is not second nature and she is getting frustrated. My LG TV doesn't do this - once set to HDMI input it stays there. And of course, the Samsung doesn't have an on/off button, so there is mode changing required on the Harmony (the Samsung has a built-in joystick which brings up menus on the screen - turning off is a process which requires dexterity!).
I could connect the Humax by SCART, but the TV only has one SCART and anyway it seems like a retrograde step. I might try it on RGB and see what the picture is like, it might be a temporary solution.
The Harmony is not as configurable as I would like, but even if it was I don't know what I could do. It would be useful if there was a key sequence guaranteed to bring up the HDMI input instead of "input, down n times, OK". Erasing the number buttons might help, so that the TV can't be sent channel numbers by mistake.
I need to do something to help tomorrow, and I am not at the moment fully aware of the ins and outs until I have a play, but in the mean time if anybody has any bright ideas I would like to hear them.
When are manufacturers going to put more consideration into their user interfaces from the point of view of elderly users? It would do no harm for the rest of us either.