Philips Magnavox 15MF400T 15 in. LCD Television Logo

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Question about Philips Magnavox 15MF400T 15 in. LCD Television

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Magnoavox 20MF500T My nephew tapped on the tv with a toy and the screen turned pure white. It now has white screen and vertical & horizontal lines. The audio is fine. The tv was bought in March 2007.

Posted by jeanette gaines on

  • fla laser Mar 19, 2008

    After 2 min. of operation,picture freezes and screen slowly fades to white.Audio fine. HELP JOHN

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Mohamad Abdan

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  • 71 Answers

Look don't worreuy about the screen it is good at any way and not affected , one jack inide is loosen from its place so you have to get a qualified repair man to re fasten it to place that is the fault sharply please don't forget to do excelent rate cause i here to help you regards

Posted on May 07, 2007

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How do I fix vertical lines on my TV?

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tip

If Your screen shows a: white vertical line on a black screen or, a white...

If Your screen shows a: white vertical line on a black screen or, a white horizontal line on a black screen:
Your TV vertical or, horizontal power transistor or, chip is getting too hot.
A vertical line indicates the horizontal circuit is at fault, a horizontal line indicates the vertical circuit is at fault.
To troubleshoot: Turn on your TV untill the line shows then: after about a minute, remove power (unplug) the TV, remove the TV back cover, carefully using your finger find the too hot transistor or, chip; or, use component coolant; spray the too hot component with a component cooler repower the TV, until the screen comes back to normal. To fix: apply white sylicone coolant cream to the back of the too hot transistor or, chip. or, if there is room, a small fan can be wired in to cool the part. Radioshack sells the cream and, also a "component cooler spray" that should find and, fix this problem, also; with power removed you can, if you feel it is safe; carefully (with only one hand) feel the part; it will be very hot! (it could burn your finger!) Do not touch anything else! (this will not hurt the tv; when the picture comes back on (the offending part has cooled) you have found the problem part.
on Apr 06, 2010 • Garden
tip

TV shows either: black screen with: white vertical or, horizontal line

If Your screen shows a: white vertical line on a black screen or, a white horizontal line on a black screen:
Your TV vertical or, horizontal power transistor or, chip is getting too hot.
A vertical line indicates the horizontal circuit is at fault, a horizontal line indicates the vertical circuit is at fault.
To troubleshoot: Turn on your TV untill the line shows then: after about a minute, remove power (unplug) the TV, remove the TV back cover, find the too hot transistor or, chip; using component coolant; spray the too hot component with the component cooler until the screen comes back to normal. To fix: apply white coolant cream to the back of the too hot transistor or, chip. or, if there is room, a small fan can be wired in to cool the part. Radioshack sells the cream and, also a "component cooler spray" that should find and, fix this problem, also; with power removed you can, if you feel it is safe; carefully (with only one hand) feel the part; it will be very hot! (it could burn your finger!) Do not touch anything else! (this will not hurt the tv; when the picture comes back on (the offending part has cooled) you have found the problem part.
on Apr 06, 2010 • Televison & Video
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Where is horizontal scan out put section?

Hi Majid
Just contact any service technician to repair your TV. It will be best for you.
Gopakumar Gopalan Google
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I have a line running thru my tv

vertical(up/down) or horizontal(left/right)? color/white? when you tap on the top of your tv does the line go back to a full screen? could be a makers defect.
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Troubleshooting magnavox television model 20mt1331-17

I have a model 20tm1331-17 magnavox tv and when i go to turn it on it will turn itself back off. Any suggestions as to the problem?
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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
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Permanent horizontal line approx. 4" from top of screen

if this line is in the picture, that is possible burn in screen. if you have a black bar at the top or faint white lines that come down from top this is caused by defective filters in vertical circuit or bad vertical output. mch
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Lines on tv

Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
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