Thanks for the reply. I'm guessing to do such typical troubleshooting method (disconnect some hardware as HDD or tuner and see what happening etc.)
I'm just curious why the decoder, which should be in deep stand-by might need to activate the HDD or anything else, as it should not do any update, EPG update or anything. It's also strange, because, it's operating correctly when is powered, so I can watch and record, watch a recorded program.
I will investigate in the next days. Does it happened to others?