Question about NEC PlasmaSync 42MP3 42 in. Television

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Onida tv Onida CRT TV Model C021 lqst is having Horizontal Line. I have changed Vertical ic AN 5522, but still same. The osclator ic is MG 1264. Need help

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Onida tv


Horizontal line on screen denotes the absensce of vertical sweep itself. Check the vertical output section circuit to LA7840. Check for any loose solder terminals. It will be best to measure the input voltage to that IC from the LOT secondary supply. Try by replace the IC. If these do not help you, measure the frequency from the main IC. It should be at 50Hz. If this frequency is not present, the main IC is faulty. If you wish to get some more details about the circuit, check this link. http://electronicshelponline.blogspot.com/ Pull up older posts there, either by its left side bar, or see it in Timslide option. Schematic diagrams, that show vertical IC LA7840 is given. You can compare it.

Jun 23, 2013 | Televison & Video

1 Answer

Tv has horizontal line in middle of screen,sanyo ds25390


hi if only a horizontal line across with no video anymore, you have bad either vertical ic or no dc supply b+( vertical ic ) or no output dc coming from the ic. if it is not totally a horizontal white line and you can see a video you must check leak or bulged capacitors at the vertical section near the vertical ic. hope this can help good luck.

Oct 02, 2012 | Televison & Video

2 Answers

One horizontal line comes on screen model of TV is onida KY tunder


needs a new vertical chip call your local tv repair men to get the job done cheap

Jul 01, 2010 | Televison & Video

3 Answers

My 15 year old Toshiba Televisiononly shows a narrow horizontal band in the middle of the screen. Sound OK.


Hiii fairley,

You aren't specsificly dercribe yor tv set.
For common TV horizontal problem ;i.e : White line accross the horizontal screen, horizontal band,etc..it's can solved by replacing the IC Vertical/Transistor, and olso to replace the cap nearest the IC.

For common TV Vertical Problem :i.e : White line at the center of the screen (top to bottom),Vertical band,etc...It's can cure by Replacing the Horizontal IC/Transistor,and offcurse the cap's.

Tha's what all I know....

Hope can help you to solved the problem.

Thank's

h3liax

Jun 22, 2009 | Toshiba 32A33 32" TV

2 Answers

LG vertical failiure vertical line at the bottom of the crt


replace the vertical driver ic and the proccesor ic

Nov 12, 2008 | Televison & Video

2 Answers

Onida Ky Thunder tv blackout


my onida ky thunder giving fault led blinking after plugin and after 5 second goes to stopped mode

May 11, 2008 | Televison & Video

1 Answer

Sony tv there is sound but no picture only horizontal line


hi there, one horizontal line means a vertical section prob., check some resistor with low value and a defective diode, possible ic part is defective. do some test and check up. ty

Feb 25, 2008 | Sharp 27C-240 27" TV

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