I have a problem with my gigablue quad plus which is running vix.It is detecting no signal from my sat. I thought it may be the f connector but as it is a twin cable, I have ruled this out as it wouldn't happen to both at the same time. I have also tried scanning with both tuners to no avail. I also have a cable tuner on the same box which is still working fine and giving all the channels, its just the sat which is the issue.It has been working for years with no problem until 2 days ago when it happened.Any help or tips would go a long way.