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Re: lhorizontal line at centre ,rightside of screen no...
This is a failure of the vertical deflection circuit. If you can solder, you can fix this yourself. If you wish to attempt the repair, please update this and I'll provide additional details and instructions.
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That is called "Frame Collapse" because the picture "Frame" has collapsed into the single horizontal line. It may be caused by dry joints or output failure of the frame output stage. A fairly inexpensive repair.
If the 2 white lines are in the centre of the screen it sounds like you have a fault called 'field collapse' . The 'x' or horizontal circuit on the tv deflects the beam across the screen which in your case is ok because the line runs across the screen ok. The 'y' or field circuit on the tv deflects the beam down the screen. Without a circuit diagram for your tv i cannot point to individual components.
I'm sorry. Based upon the lack of response on the original posting, I was not aware you were waiting. The only update there was a TFT rating. I will look up the specific parts tonight and update the original posting with the details and instructions.
My LG tv has suddenly got a problem with the picture. Whilst watching the tv with no problems at all,
the picture was suddenly reduced to a thin vertical line down the centre of the screen
and an awful smell seemed to come from the tv
There is a short ckt in your tv in horl. section.
1 isolate power from horizontal section.
2 check for normal output from power supply.
3 check parts in horl output section
a hor.output transistor
b diode & cap in h/output trnsformerckt.
c check for print.
d if all are ok check for eht transformer.
e if every thing becomes then reconnect hor output section supply.
f put on the set.