Question about Emerson EWF2004 20" TV

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Lighted line in center of tv

There is a line of light across the center of the television screen, is the picture tube burned out and is it expensive to replace if it can be replaced?

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  • Anonymous Sep 30, 2008

    I ahve the same problem- same exact day as you. There is a horizontal line in the center of the screen. It is very bright. I changed the fuse, did not solve the problem. I can hear the program on the tv- just can't see it. Thanks for any help, Judy

  • markphoos Sep 30, 2008

    Sound works great, just have a very bright horizontal line right in the center of the T.V. ? any ideas before I spend an arm and a leg for a new one??

  • gavorial Nov 07, 2008

    so check the supply of vertical IC if its ok ,re solder the ic.

    How do I actually do this?

  • spurs70_1 Dec 06, 2008

    I have a 50'' Panasonic plasma and a thin black line has only started to apear but will not go away. Tried adjusting everything but no luck. Has anyone got any idea what this is? Have had the tv for about 18 months.

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The trouble of your tv is not a picture tube.it's in vertical section,so check the supply of vertical IC if its ok ,re solder the ic.

Posted on Oct 01, 2008

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1 Answer

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Check and replace the smoothing capacitor used at it video output voltage This capacitor can be located at the neck board of picture tube.To get more details, http://electronicshelponline.blogspot.com/ Pull up older posts.

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When I power on my Mitsubishi CS-35313 tv, I only get a thin horizontal line across the center of the picture tube. What could be the problem?


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1 Answer

No picture.Just a single line in middle of screen.


No, your picture tube is fine. This is a problem in the vertical circuit that deflects the beam up and down. This repair is fairly typical across most television brands and should not cost too much to fix. I don't want to quote another shops pricing but from us this would run about $150.00 to fix.

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if you fix also not expensive just vertical ic problem

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Your Vertical Amp is probably Blown (bad) , but before you change that check all capacitors around the vertical amp IC and / or resolder resistors and diodes around vertical amplifier.
And NO it is NOT the Picture Tube
Good Luck
JG

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This is called field-collapse. Either

1. The problem lies in the vertical deflection voltage-doubler circuit. The usual fault is a single capacitor of 100uF/35V that has failed. It is normally connected to a rectifier diode right at the vertical IC. Replacing the capacitor usually gets it working perfectly again.

or

2. The vertical drive IC has failed.

If you are finicky around technical work, then a reputable local repair shop in your locality should do it quickly for you and charge only labour.

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1 Answer

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vertical output IC has loose solder joints.if you continue to let it operate this way it will etch a burn line across the face of the tube so discontinue use.

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