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Sir i have sansui leader 500 main iv no tda 12135 Vertical ic ok vertical not open

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Check and replace the vertical scan output IC. Check related capacitors, and solder terminals at the vertical scan output section circuit for any loose soldering. Check the voltages at the vertical scan output IC. Refer its circuit diagram [schematic] for more details. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Posted on Apr 03, 2015

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Posted on Jan 02, 2017

MikeNJ1964
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SOURCE: tv cuts off 10 seconds after switch on and destroying vertical output ic

If the main IC is not putting out a vertical drive signal then the vertical output will not do anything and therefore will not be damaged. What exactly do you mean by the set "literally eats deflection IC's"? What is the number on the vertical output IC? I will bet that your pump-up cap or pump-up diode is defective.

Posted on Jul 05, 2007

  • 556 Answers

SOURCE: missing vertical deflection on philips TV

TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc) caution for fixing this problem minimise brightness to avoid crt burn. proceed as follows 1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check 1 supply at vertical output ic from eht. 2 yoke connector loose . 3 check vertical output ic parts. 4 finally vertical ic. please check for normal output from power supply even though fault gets rectified just for protection. good luck.

Posted on Sep 23, 2007

welcomejee
  • 10594 Answers

SOURCE: NO DEFLEXION VERTICAL

Please check its Horizontal Output Transistor, supply voltage to H-Out Transistor. let me know any update to help you further.

Posted on Aug 10, 2008

  • 7 Answers

SOURCE: vertical line in center have replaced vertical output ic

If the line is vertical then the problem is no horizontal deflection. The vertical chip is probably fine.

Check connections around yoke (thats the connector with at least four wires that goes up to the coils around the neck of the tube)

Maybe that TV has two horizontal output transistors. One for deflection and one for high voltage? Check both of them. Look for bad solder joints!!!

Posted on May 22, 2009

bihug
  • 15 Answers

SOURCE: unit has sound, no vertical deflection. caps and

If there's an audio,,it might be the defective Vertical IC...but check first if there's 24v-26vdc supply coming from FBT going to Vcc of Vertical IC.

If there's no Audio,and only white horizontal line in the screen,check the Vertical out of Jungle IC.

Good luck!

Posted on May 03, 2010

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In lg tv using cp 79a chassis eax35112303(4)picture comes only top on the portion aproxemately 4" remaining portion of the crt blank


Check and replace the vertical scan output IC. Check the vertical scan winding of the deflection yoke for open circuit.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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Why come white vertical line on my t.v screen in center?


You said "I checked vertical output line from main ic pin 23 found correct"

But the problem is "Horizontal Output Line" Try that.

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How can I find the part number to order a Vertical Output IC for a Sansui Model tvs2746a


The vertical output IC will have a number printed on it. You mus send this number to get a new one. Normally, all vertical ICs are available from local electronic spare part selling shops. It is not a difficult to get component. Won't cost more too.

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TV MODEL :SANSUI HARD ROCK 21'' PROBLEM : TIME TO TIME ONE HORIZONTAL LINE COMING WITH BLACK SCREEN


Hi The problem of your teevision is what we called the vertical line problem.The problem is in the vertical section of the board.There are many of cause of that problem.First is either loose connection,the circuit at the vertical section have cold solder so its need to resolder using soldering iron.Second,it maybe no vertical supply,its better to check the 12 volts dc supply of vertical ic output.if thers no supply in the ic,there a open resistor near the flyback.try to replace.Third if theres no loose connection and have a voltage supply the problem is either leaked capacitor or deffective vertical ic output. Commonly in that problem is the loose connection,try to resolder the verical section.

Jul 12, 2011 | Sansui DTV2760 27" TV

1 Answer

DeawooTV Model DTC 2975 I want to know about vertical ic number.b,cos i can't fine out the number that ic is burn.


Hello

There are two mumbers used in Dawoo tv as vertical IC.
If used is a [9] pin one number is [TDA 8357J].
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OK.

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My screen close down from top to bottom and lives a horizontal line rite @ the center of the screen,,,,, Which component is mostly faulty in here ? and what kind a component is this ..?


Hello
It may be due to an Integrated Circuit [IC] fault. Your TV has lost its vertical sweep, and the is why you see a norizontal bright line across the center of the screen. All TVs has bot Hotizontal and Vertical Sweep to spread picture on the screen. When Vertical sweep fails, you will see a horizontal line, and when horizontal sweep fails you will see a vertical line at the middle of the screen.
n your TV, most likley the vertical Ic is faulty. This is a common phenomena in almopst all telivisions. The said IC is diretly soldered into the circuit board inside your TV. To replace it you have to open your TV. Take all precautions before opening the back cover of your TV. You are going to work with an electrical equipment, and keep it in mind always. After opening the back cover, just locate where the Vertical Output Ic is. It will be normally screwed to a heatsink plate, inorder to radiate heat from it while working. You can locate it by the following method. Different TV circuits has different positions to this Ic. Just look on the Deflection Yoke [the coil fitted on the neck of picture tube]. From there four wires will go to the main printed circuit board. Out of which two of them will be thick, and other two will be thin. The two thin wires are the carriers of vertical sweep from main board to deflection yoke. Follow the the two thin wires. You will see it to be pluged into one point at the printed circuit board. Just upside down the printed circuit board, after pulling it outwards, not disturbing any of the wirings, and look through the circuit track, to which point the tracks goes to. Somewhere near to it you can locate the above said IC.
Just take the main input votage to that IC. It will be normally 18v to 35VDC. You must have multimeter to measure this voltage. If the voltage is there, look for any loose solderings over there to the legs of that IC. If there is any soldering loose, the IC will not work properly, and vertical sweep loss will be the result. If there is proper voltage check the voltage at the output pin of that Ic. It should be almost half the voltage of the supply voltage. If it is not there, make sure that the IC has damaged.
Resolder it out from the board, and go for a same type and number. Replacing it will solve the problem. Normally vertical output ICs are not very cosltly. Here in India, all types of vertical Ics will have a price rate between 80 to150 Indian rupees, that is upto four American Dollars. Ok.

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My LG TV Model 21FD2RG-AX have problem vertical failure its IC TDA 9340PS/N3/A/1923 vertical out put section ok


replace the vertical ic or check waveform of input signal to the vertical ic from processor, if these all are OK, check the deflection yoke continuity and replace if there have problem

Oct 17, 2010 | LG Televison & Video

1 Answer

I have a Sansui TV model DTV3200. Vertical foldback. Replaced vertical IC LA7847---did not solve problem.The CRT is fine. Thanks for any assitance you can give me.


fold back means u have to check power supply to v/ ic 25v. if it is ok,,, u have tochange all capacitors in vrtical section,, sometimes feed back resistors may be fauty,,check them also

Mar 19, 2010 | Sansui DTV3200 32" TV

3 Answers

Missing vertical deflection on philips TV


TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc) caution for fixing this problem minimise brightness to avoid crt burn. proceed as follows 1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check 1 supply at vertical output ic from eht. 2 yoke connector loose . 3 check vertical output ic parts. 4 finally vertical ic. please check for normal output from power supply even though fault gets rectified just for protection. good luck.

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