Question about Jensen J50-MCTV Television

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NO VERTICAL DEFLECTION

The TV has no Vertical Deflection. The yoke resistance readings appear Ok and I don't have a schematic. I'm not certain where the Vertical circuit is on the mother board , the components for that circuit or the voltage readings to look for. I haven't read any shorted or open caps , shorted diodes or open resistors as yet....However, I'm just looking at random.

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  • ARNOLD DRESCHER Aug 19, 2006

    There is another # DHHS 0090451-00 on the case and SP0215A stamped on the mother board

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Replace vertical out deflection ic

Posted on Mar 10, 2008

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That model number is a bogen model number. Whats the complete model# as we cant find it if its not complete.

Posted on Aug 19, 2006

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1 Answer

Lg tv ic 9370 vertical line and no rastar & retrace


Absence of horizontal scan signal to the deflection yoke. Check all the connection to the deflection yoke. If found OK, the deflection yoke winding [horizontal] is open. 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/

Aug 26, 2015 | LG Televison & Video

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Horizontal ine in CRT tv


Failure of the horzontal linerity coil, possible dry soldering on the board of the components- resistors and capcitors- in the horizontal coil circuit . Also failure of the deflection coil- YOKE- in the crt. So check the coils and the circuit around this section as the rest of circuit seems OK.

Apr 06, 2011 | Televison & Video

1 Answer

There is a line down the center of the screen


whether the line-shaped vertical or horizontal? if it appears a horizontal line on your side, it signifies the vertical rays do not exit the screen or your TV vertical part is not working. damage can be caused by IC Vertical, or in the vertical deflection coil yoke.dan if a line that appears is from top to bottom that indicates the horizontal section is not working, usually there is a problem of the deflection yoke is not connected or defective.

Jul 11, 2010 | Televison & Video

1 Answer

How do you fix a white horizontal line across top of Orion TV?


Hello eatkinson,

This denotes a problem with the vertical deflection circuit. This is more then likely the result of the vertical coupling capacitor failing. You will need the schematic diagram of the TV to find the capacitor in question. it is located between the vertical output stage and the vertical deflection winding of the yoke transformer. In addition check the continuity of the vertical winding of the yoke transformer this can cause the same problem. In any event the problem is that the vertical deflection signal is not getting to the yoke transformer or the yoke transformer is malfunctioning.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Apr 08, 2009 | Orion1934 19" TV

1 Answer

35 inch Mitsibutchi TV model #CS-35201A, serial #502637, manufactured 1993 TV made a popping sound when turned on and now only visable object is a straight horizontal colored line in middle of screen....


Hello dan82810,

The picture tube or CRT is not the problem, and yes this set is fixable. What has happened is that the vertical deflection circuit has malfunctioned. More precisely the vertical coupling capacitor has malfunctioned (The pooping sound was the capacitor exploding).

Open up your TV (take the back off and unplug the set), and look for the damaged capacitor, it will look puffy or if it has exploded.

To fix this problem you will need the schematic diagram for the TV (can be found at www.servicemanuals.net). Then you will need a multimeter to measure the DC voltages on the vertical output circuit, and finally an oscilloscope to measure the waveforms at the vertical output circuit and the input to the vertical windings of the deflection yoke transformer.

Now what you should basically find is a sawtooth wave at 60Hz which is the drive for the yoke transformer. However since the coupling capacitor is bad you will have the wave at the output of the vertical output stage, but not at the input of the yoke transformer. Use the schematic to find the value of the capacitor that has malfunctioned.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Feb 28, 2009 | Televison & Video

1 Answer

Emerson EWF2702 TV Problem


Hello yyimerr1,

This is a vertical deflection problem, These are the possible causes:

1) bad vertical coupling capacitor
2) bad vertical output IC
3) bad vertical driver IC
4) bad CRT deflection yoke

Troubleshooting needed:
1) using the TVs schematic locate the driver IC the output IC and the CRT yoke transformer.
2) using an oscilloscope look at the vertical driver signal it should be a sawtooth signal from the driver to the yoke (increasing in amplitude for each section, i. e. driver and output).
3) if no sawtooth patter is seen that is your problem, look for the component in the section where signal is entering but nothing is coming out.
4) replace the components

Now let me tell you something, don't continue to play the TV with the line present with brightness applied, this will burn the image of the line into the phosphorous coating of the CRT.

I hope this helps

Thank you,

Shuttle83

Nov 01, 2008 | Emerson EWF2704 TV

1 Answer

Vertical deflection went out and now HV is going into shutdown


Hi,
Get service manual / schematics from HERE and find why vertical uotput IC is blown in your TV.
Service Manual will also give you info how to perform vertical adjustments.
Hope this info will help you to resolve problem.

Aug 22, 2008 | Mitsubishi CK-31304 TV

1 Answer

Screen Smaller on Orion1934" TV


Hello Falken94,

Your TV is losing what is called vertical deflection. This might be caused by the vertical coupling capacitor going bad, or by the vertical deflection coil on the yoke transformer going bad. In any case there is not enough vertical deflection signal getting for the vertical output section of your TV to the vertical coils on the yoke transformer. I would suggest that you get this looked at by a qualified TV technician, due to the nature of this problem.

I hope this helps,
Thank you,
Shuttle83

Jun 19, 2008 | Orion1934 19" TV

1 Answer

Does the TOSHIBA TA8445K Vertical Deflection IC fails when the Deflection Yoke is Dirty?


hola tengo un tv onwua que no me habre el verticar ya revise los voltajes y estan bien pero en la pata 11 tengo solo 7 voltios en ves de 12 voltios cual puede ser el problema de mi parte muchas gracias.mi email es ruben_148_2@hotmail.com.

Mar 05, 2008 | Sharp Televison & Video

1 Answer

Sanyo 25" Standard Tube Vertical Deflection Problem


you can proceed as follow to fix it.

  1. reduce brightness to minimum to avoid screen burn.
  2. check voltage on vertical uotput
  3. check yoke connector for loose.
  4. check v/yoke winding.
  5. check v/drive from signal processor to vertical output

now your problem how to find out whether drive is there or not it is very simple even you donot have scope.

you simply touch with screw driver or meter prob  at the poibt where vertical signal is input to vertical stage

if h/line is spreadindg or tries to spread then your output is ok &problem is in drive ckt.

for schematic try given site give model no &download it

http://www.eserviceinfo.com/index.php?what=search2

hope this will help

 

 

Oct 12, 2007 | Sanyo AVM-2557 TV

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