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Flatline what is wrong when the tv screen suddenly lost its picture. Instead it only shows a vertical flatline. Sound is ok tho. And when I turn it off for 10 minutes or so then on again then its okay. Then sometimes its goes off again then i do the same process again. What needs to be done?

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  • 18 Answers

Please ensure that all the wires connecting to tv are not loose. Keep the air vents of Tv clean and airy. Let it cool if u watch it whole day

Posted on Mar 09, 2008

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Tv 27" has only half screen picture horizional I


Possible failure of the VERTICAL SECTION of the deflection circuit. It is possible that the areas related to the vertical circuit is checked , check for weak capacitors near the output vertical drive. Also a faulty vertical coil- deflection coil- can result in half picture.
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Flatline!


the vertical drive ic that drives the yoke for vertical sweep has blown.
sometimes it is solder problems like sharp and toshiba had.
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1 Answer

Half screen showing


ok
keep tv off.
it will only get wors
if sumon dosent work on it soon
the problem you are having in the vertical section of the tv
hav a repairman resolider all conection on the vertical IC and check the serounding componets for falts.

regards daniel.
PS the repair takes me about 15 min.

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Sounds like a failed vertical amplifier circuit. This is normally primarily contained in an integrated circuit mounted on a heatsink.
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Now all you need is a TV repair shop that is still in buisness.

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Samsung TV stopped displaying picture


No picture but sound can mainly be of two problems, most of the times it is caused by a faulty vertical deflection ic, you can diagnose this by slightly increasing the screen voltage by turning the screen control on the LOT, a horizontal line will appear if the vertical ic is shot, and the other problem is the CRT base, but this is less common for shot base won't go off at once, it will show picture faded in the beginning. Now another problem could be the horizontal output transistor, if the tv has a high power sound output, the sound power supply will come from smps itself instead of from LOT, check that too, to confirm this, check if the CRT filament is glowing. Good luck.

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2 Answers

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1 Answer

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