Question about Sanyo DS20930 20" TV

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DS20930 TV my name rochester My sanyo tv was working fine, then one mornig i turned it on and the sreen was black with a horizontal line in the center of the screen. i am able to change hear sounds and change channels. let if I should throw it away.

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  • Anonymous Mar 22, 2008

    I have the same problem with a Sanyo DS20930 model...thin white horizontal line in the middle of screen, and no audio. Remote turns TV on and off. If left on for a minute something gets hot and can be smelled. What appears to be the 'vertical IC' is numbered LA7804 ON. I cannot find an NTE or other replacement. What is a good replacement? Other suggestions appreciated.

    Thanks

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Your vertical output ic may be bad

Posted on Mar 18, 2008

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Sanyo makes a fine TV. You have a problem in the vertical circuit causing the line. You should not play the set in that condition because you can dammage the picture tube. Call a few local shops to get an idea of what they charge to fix a vertical problem on a 20" TV. If the cost of repair exceeds about 65% of replacement, toss it. In my opinion the newer sets are lacking in quality compared to older ones. In short , they break more often. If you choose to buy a new TV stay with a known Japanese brand.

Posted on Nov 29, 2007

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1 Answer

TV screen has a thin horizontal line in center


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User manual:
http://www.retrevo.com/support/Sanyo-DS20930-TVs-manual/id/17567dj485/t/2/

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1 Answer

I am trying to help my neighbor. She has a Sanyo flat screen tv Model DS20930. The picture she gets is a thin line across the center of the screen.


Hello
Set the brightness, contrast and colour control of that TV to minimum. Watch it in a dark room whether ther are thin white lines across the screen, at about an inch apart, from bottom to top of the screen. If there are lines, that TV needs screen control adjustments. That is, now the screen voltage given to the picture tube went high to some reasons. If you have confidence that you can adjust it, I will guide you.
Open the back cover of that TV. Locate the LOT [Line output Transformer], usually one red thick wire is connected to the top of the picture tube with the help of a rubber ****** and clip. In most TVs it can be located and can be seen as the back cover opened. There are two variable control, fitted, integrated to LOT. Normally the upper one is marked as focus, and the lower one is marked as screen. You shoud adjust this control to avoid these lines.
It is a live service, that is the TV must be switched on during this time, and take causion in every respect not hurt by yoursef and the TV. Keep the children away from you, and an other adult person beside you is better. A liitle turn counterclockwise will remove this problem.

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1 Answer

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when you turn the TV off do you see abreif white line acroos the screen and do you feel the static on the fornt of the set when it comes on? If so
This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

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1 Answer

TV BLACK SCREEN WITH THE POWER ON.


It needs repair.
If the line is vertical, then something is damaged on its horizontal circuit section on the mainboard.
If the line is horizontal, the vertical circuit section is damaged.
have it repaired to a qualified service center or person!
avoid switching it to avoid further damage on other parts!

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1 Answer

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Try resetting the settings. In the menu there should be a settings option. Reset them to default of facory settings. Here is a website that mayl help you with this.
Let me know if this works out for you.

http://www.retrevo.com/support/Sanyo-DS20930-TVs-manual/id/17567dj485/t/2/

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1 Answer

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Does your screen light up or picture comes before it turns off? This could be from your X-ray protection feature, you will have to check the power supply output voltages.

Jan 30, 2008 | Sanyo DS20930 20" TV

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