Hi,
I can confirm similar issue on my DM8000 which has 2xBCM4506 internal tuners and BCM4505 as tuner C. It has 27,5w connected directly to this tuner C without any diseqc switch. 27,5w is not available to tuners A and B. Tuner C shows lock and 10db signal. If I search for channels on 11495V DVB-S2 QPSK 44100 9/10, it finds 0. Even manually entering all channels into lamedb does not help.
If I install the same bcm4505 tuner into the old dm800 it finds all the channels, and everything works as expected.
Any ideas?
TIA