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How to solve horizontal lines on a CRT TV monitor and what could be the possible courses for it


Monitor horizontal lines problems usually caused by a defective vertical output/driver ic. A missing supply voltage to the vertical output ic may caused similar faults which is one horizontal line across the display. Dry joints and missing vertical output pulse from vertical oscillator ic also could contribute the same symptom. If you discovered that the protection resistor (usually from 1 to 4.7 ohm) open circuit or burnt, then replacing it won't solve the problem. The resistor burnt or open circuit was due to a short in the vertical output ic. Thus you have to replace the vertical output ic and the burnt resistor together before you switch on the monitor.

Jun 12, 2015 | Televison & Video

2 Answers

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.

Jan 29, 2015 | LG Televison & Video

1 Answer

Vertical lines


check the filter near vertical ic and also check the vertical ic if it is good and also check the if there is 24v supply to vertical ic.!

Feb 05, 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

1 Answer

Horizontal line


Basing on your post : Horizontal line ,

check vertical deflection circuits

( includes IC, capacitors , resistors % foil paths ) , up to the yoke.


Could be just a cold solder joints on Vertical IC, open resistor,

leaky capacitor or both




Have voltage :


On most the supply line of vertical IC is +24V

Aug 14, 2012 | Televison & Video

1 Answer

Tedelex horizontal line plus no sound


No, you may have 2 different problems. I would repair the vertical first. Check for 24v on your vertical output ic, maybe bad vertical output ic. If it is shorted, may draw down your vcc for your audio circuit. Check vertical circuit for open resistors or bad vertical output ic.

Nov 25, 2011 | Televison & Video

2 Answers

Vertical line in center


If the line is "vertical" then the vertical circuit sounds OK. The problem would be in the horizontal deflection.

Check yoke connection and solder around horz defl circuit.

If the line is horizontal then I would suspect the vertical IC.

Apr 02, 2009 | Sanyo DS31520 31" TV

3 Answers

Screen only showing single line of video in center.


hi there, is the single line horizontally or vertically? if horizontal line, you do have a vertical section problem, check some parts at vertical section, the vertical ic, the power source of vertical section ie diode & resistors. ty

Dec 26, 2007 | Zenith Z32X31D 32" TV

1 Answer

Vertical 1 line


Check voltage supply at vertical amp ic ,if present than change vertical amp ic.Some times supply line is dameged by faulty amp ic.therefore you have to rctify supply and replace ic.Check supply line fusible resistors.
gopal

Dec 13, 2007 | Televison & Video

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