1800T not responding to Humax remote RM-H06S

[HumaxFan007]

Can anyone suggest why my Humax 1800T Freeview has stopped responding to its remote control (RM-H06S)?
What I've tried:
1. Have put new batteries in the remote - but to no effect.
2. The 1800T's remote works with another Humax (a Foxxsat HDR) - it can turn it on and off, and change channels etc. So it looks like the 1800T's remote is working ok.
3. The on/off button on the 1800T front panel turns it on/off. When it's on, the screen displays the screen-saver clock but nothing else.
4. Before the 1800T stopped responding to its remote, its display showed recorded programmes, and I could use the remote to play them.

Question: might the 1800T's remote have lost its link to the 1800T, somehow? If so, how might I re-register it?

I hope someone can help!

Martin
.

 

[Black Hole]

What I can suggest is the 1800T's IR receiver is broken, but check there is nothing obscuring the line-of-sight.

Other advice: Things Every section 13.

 

[EEPhil]

Have you tried disconnecting the 1800T from the mains and then reconnecting? That might get the Humax to show something other than the screen saver. If it boots up properly to show a normal display the remote might be recognised.