Question about Sharp 19L-M100 TV

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No Display after servicing a tv for vertical fault (closing in) by changing four filters,the display refuses to show, although the remote works the tv good enough, it was recognized that no channel display was evident nor the volume display or menu display on this tv, can I have some assistance on this problem thank you in advance

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Good day.
Check on the resistors near the flyback for possible change value(120k).
also, check on the losse terminals of the chroma system


chris

Posted on Mar 28, 2008

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Posted on Jan 02, 2017

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Hello
That fault is called vertical foldover, and it is mainly due to some fault in the vertical output section inside the circuit borad of your tv. It may be due to some capacitor problems or an Ic fault. To rectify the problem, you shoud open your tv. Take every precautions before opening the tv, while we take working with an electrical equipment. As high as 30,000VDC points are there inside your tv, while it is working, or even after that, the picture tube's final anode will have a charge equal to the voltage said above, for a long time, you should be very cacutious.
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If not, change the supply filter capacitor, that filters the input supply voltage to that IC. It is best to change the filter capacitor said above, and all the capacitors in that section, which will not cost too much. When replacing capacitors, keep a keen look on its polarity, where electrolytic capacitors ahve positive and negative legs marked on it, it should coincide to that of the markings on the printed circuit board, otherwise there is a chance for them to explode out.
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