Does anybody here understand how tuner hardware work? >From my understanding tuner sends output voltage( 13V/18V) to LNB( in satellite dish) and from LNB input voltage is coming to tuner chip then to demodulator chip and to data bus and those data goes to CPU of the satellite receiver. I have one tuner module that has signal ( measured by oscilloscope) on data bus but sattelite receiver shows no picture, so the data on data bus is probbaly decoded in a wrong way. So, can anyone suggest a way what procedure to use to find out which part( electronic chip) is faulty? Thanks for feedback -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html