Have a Humax LU23-TD2 - a 24" LCD with analogue and DTTV tuners. The DTTV side has failed - just a blank screen. No reaction when you try changing channels - and if you do a scan, it runs through the analogue side, then stops when it swaps to the digital tuner.
It's in the kitchen, and not a total disaster as I have a feed to it from my PVR in another room - so can still use it, but it would be nice to sort it.
I'm not familiar with modern TVs - any chance it uses a separate part of the power supply to feed this tuner, and that has failed?
I'm rather gutted - it was expensive for a set that size, only about 5 years old, and not heavily used. About a couple of hours a day if that.