Saturday, March 21, 2009

No Signal / Unusable Signal

Big part of the call volume I got today is related to Video Black, Blue, None, Snow (VBBNS). The customer is either getting a black screen, blank, blue snowy or even no signal. This normally happens if a button on the remote is pressed and the tv is no longer tuned to the modulated channel required for their television to be turned to, to get the picture from the receiver. It can also be that the receiver itself is turned off, in this case the television is not receiveng a signal at all from its input source.

Understanding input source also requires one's understanding of different TV inputs. Normally, if one is using a coax connection from the receiver to the television, the TV itself has to be set to either channel 3 or 4, and in case of a TV number 2, it has to be set on either channel 60 or 73.

Now for HD televisions, the task is somewhat complicated because of several input sources it caters. Below is a simple checklist of available cable connections in the market that one can use to connect to his TV.



Coaxial Cable (Can be RG6, RG11)



RCA Cable also known as Composite Cable



Component Cable, also known as Ypbpr Cable



DVI Cable or Digital Video Interface



HDMI CAble or High Definition Multimedia Interface



HDMI to DVD CAble



S-Video Cable



Toslink Cable