I have retuned my box several times and got 160 channels with 100% signal. However when I pull up the guide all looks OK until I select a channel and TV screen goes blank. It was working OK a couple of days ago. Any ideas?
When you say 100% signal is that quality or strength?
If it's strength then the tuners are being overloaded & you need a variable attenuator between the aerial feed & the box's input to reduce the strength to maybe 85-90%.
