I have had a Humax 5000T for a few years now and it is connected to my 15 year old Sony Bravia TV set. I keep the TV in standby and whenever I try to use the Humax remote to turn the set and box on it takes ages for this to woork. Initially I thought it was a poor handset or dodgy batteries, but it is not that. I also try the button on the box instead of the handset, but this is not any better.
The connection to the TV is by HDMI cable. It is more than a little frustrating. Furthermore, the ridiculous lack of indicator lights on the Humax makes the whole process guesswork.