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Vertical line in middle of screen. Half screen is ok. The right half shows color washou All indications point to Light Engine But what about a cold solder joint in this subsystem
no the light engine is fine. it is the digital signal processing to the engine. suggest local service centerno the light engine is fine. it is the digital signal processing to the engine. suggest local service center
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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
"the vertical lines" is not correlated with the lamp
1,the interface between the mother board and DMD drive board
2,to clean the the interface with some alcohol
3,securely plugged
any questions, feel free to contact me
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Check and replace its back-light inverter board. Contact any service technician. If you wish to get some details, check the site linked here. Surf the site in "MOSAIC" view. It will make surf easy. Surf the site with patience. http://electronicshelponline.blogspot.com/
probably the 2 ribbon/flex cable(s) aren't connected correctly between the T-CON board and the Scan boards that are connected to the screen/panel! If not replace T-CON board, and if that does'nt work the screen/panel is most likely bad!
do the proper isolation proceedure and try unhooking the Su from the SC board to see if you then get a normal picture all the way across the bottom half of the screen? I am assuming the Vertcal extends extends all the way from top to the bottom of the screen?
You have a board connected on the side and another on top.. the board controls your horisontal lines and your side board controls your vertical.. Afte using the television for some time the board gets very hot and the solder gets damaged. You get what is called cold solder preventing the electrical current to pass. You need to retouch with solder but do it carefully. its best if you know some one with soldering experience. That will solve your problem. you can get more details at www.bestdirectorysolutions.com
I had the same issue. I could get the tv to work intermittantly by pressing on the boards while playing. This points to bad solder joint, so I resoldered every molex plug connector, and it nows works like a charm.
there is a defected capacitor in the vertical circuit trouble shoot and replace. or if the vertical circuit is separate then replace the whole board.good luck
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