ota locals, one line on top of screen that flickers

J

jckm78

Thread Starter
SatelliteGuys Guru
Apr 21, 2006
136
0
I install a cm 4228 and connect to a directv hd receiver but the ota locals have a black and white line on the top of my 42" flat screen that flickers. The other HD channels from Dish are normal. What is the cause of that line?
 
M

mdovell

SatelliteGuys Pro
Jul 8, 2005
226
0
Maybe it's possible that it's vbi data
http://www.answers.com/topic/vertical-blanking-interval

Back in the day you could find this by adjusting the Vhold on older tv's. It was the "stuff" on the top or the bottom after the picture screen.

VBI is used for things like closed captioning, TVguide data, test patterns and I hear it might be used in europe for teletext.
 

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