Black screen with belgian channels

Hi,
My TBS6290 tuner doesn't work with FTA belgian channels, I get a black screen even if I receive a good signal.
For watching TV on my PC, I use DVBViewer Pro 5.3.2, VLC or MPC-HC on Windows 7 x64 SP1. It seems that there is an issue with the latest provided drivers or maybe my tuner is defective.
My TBS6290 tuner doesn't work with FTA belgian channels, I get a black screen even if I receive a good signal.
For watching TV on my PC, I use DVBViewer Pro 5.3.2, VLC or MPC-HC on Windows 7 x64 SP1. It seems that there is an issue with the latest provided drivers or maybe my tuner is defective.