On Tue, 29 Jan 2008 13:46:44 GMT, "Arfa Daily"
wrote:



If it was a true neon bulb, then it wouldn't actually need to be connected
into any circuitry in order to light up as an indicator of flyback activity.
Most gas filled tubes will light in mid air if they are in close enough
proximity to a flyback tranny. Back when I was an apprentice, like 35 years
ago, the guy that I worked under in a TV workshop, used to keep a short thin
flourescent tube on his bench. He used this to test for horizontal output
stage activity, simply by waving it around the FB tranny. As I recall, he
used to reckon that he could tell a lot about how that stage was working,
when he had a lack of picture fault, just by the 'way' in which his little
tube lit up.


Years ago, we'd just tape or glue a neon bulb on either a dowel or a
pencil. Then someone realized that pencil lead conducts and the dowel
method became much more popular!