If vertical deflection circuit does not work, this kind of
failure will happen. In deflection yoke, there only has horizontal sweeping,
the electron beam in the CRT only moves in the horizontal orientation, so form
this failure. (While checking horizontal and vertical deflection circuit’s
failure, we have better to use an oscilloscope.)
CLICK ON THE PICTURES TO MAGNIFY
Only Vertical Line in the centre of the screen.
This is a dangerous failure. It probable causes flash over and smoking inside the set. Don’t let your TV work for a long time as this
failure appears. Because the electron beam cannot move in the horizontal
orientation, the failure should be in the horizontal deflection circuit. We mainly
check the open-circuit fault in horizontal deflection circuit. The detail
checking and repairing steps are as follow:
