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The picture is occasionally condensed completely into one thin line across the middle. What does this indicate is happening?

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This is a frame collapse. If it sorts itself & then goes like this intermittantly then you will have a poor soldered connection either on the frame IC or surrounding components. If the white line is permanent then most likely the frame IC has failed & would need replaced.

Posted on Jul 13, 2009

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Hi there My Sansui TV screen started showing thin white horizontal lines across the top of the screen. All of a sudden the screen starts condensing the picture into fine lines across the middle of the...


It is an indication that you have a problem on the vertical section on the main board. The faulty parts is the electrolytic capacitor which affect the linearity of the screen that's why you encountered that kind of problem.
I've advice you to send it to repair shop or look for a qualified technician to isolate the faulty electrolytic capacitor and do re-soldering for some dry joints on the main board.Once replaced the capacitor your unit will back to normal again.
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I turn on the TV and there is only a line going across the middle of the TV. The sounds work the same but there is no picture. It seems as if the picture had shrunk to a very thin line that just goes...


this is commonly known as a frame colapse and could have two possable causes (1) no 28volts comming from the l.o.p.t.x or in english the line output transformer ,to the frame output i/c ,usualy caused by an inline fuse blowing this looks like a very small transistor but with only two legs or (2)the frame output i/c has packed up

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No picture Thin line across middle of screen


Hi,

Most problems indicated by your description involved the Vertical IC. With your post "tap...pop back up" signifies a loose connection or to be more specific a cold solder. I suspect that no part(s) need top be replaced but would however require re-application of heat with the use of a soldering iron.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

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this symptom, sometimes called the tube light effect, it is characterised by a bright thin horizontal line across the middle of the screen. this symptom is caused by a breakdown in the vertical deflection circuit. hence maybe the trouble maybe in the vertical oscillator, amplifier or output circuits. but if all i have said is not clear to you, better bring it to a qualified tv technician. good luck!

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Picture goes to one thin horizontal line in middle of screen


There is a bad solder connection in the vertical sweep circuit. if you know how toi solder, go and find the vertical output IC and resolder that first.. but if you have no solid state electronic repair experience, please find a trained tech to assist you in this repair, as if you wait it may end up costing you double of what it would now, so haveit done ASAP. Good Luck Please do not forget to rate this one.

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