Two suggestions.
1) Try resetting the system. Turn off the Humax unit at the mains, wait 20-30 seconds and turn on again.
2) Reset the unit to factory settings so that it resets and retunes all of the channels by doing the following.
1. Press MENU
2. Select Installation and press OK
3. Enter your password (default = 0000)
4. Select Default setting and press OK
5. Select YES and press OK
6. Enter password
The receiver will now take 20-30 seconds and then restart. When it boots
up it will enter the Automatic Search and search for the channels again.
