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Has sound but no picture.but if ,i should slightly adjust the screen volt on flyback transformer ,some even lines can be seen

There seeem to be no video signal to the crt board

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Video processor section circuit fault. It is at the main board. Contact any service technician.

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I have a Sony kp-51ws500 that shuts off and blinks 8 times, I'v read that some other people have had the same thing and it was the flyback transformer. Now my tv has just a green screen with no pi


No, the set is prone among other things to issues with the three picture tubes, go to unused video input----screen should be black with only the input label displayed-----in your case with Green screen and or slight diagonal trace lines (if there) the Green screen control itself needs to be adjusted slightly down.

I can tell you if you want how to do that---requires only a screwdriver and 10 minutes.

Dec 03, 2012 | Televison & Video

1 Answer

Tv picture is too dark- worked with contrast and


This sounds like low screen voltage(A1)try adjusting the a1 voltage bottom control on flyback transformer if you have a voltmeter, voltage on crt base possible market screen or A1 shoud be beteen 350/500 volts when making adjustment remember to take into account current taken by meter If voaltage will not adjust flyback transformer will have to replaced

Mar 06, 2010 | Televison & Video

1 Answer

When turn on no picture and there is a high pitch buzz or frying. Then after a minute or two it will shut off by itself. Before thid happened the picture would come on slowly with a frying sound and then...


my first instinct in this is flyback transformer. or if it is three tube projector could be a high voltage splitter lines in picture sound like what is called retrace lines ... this is another indication of a possible bad flyback. high pitch sound is another sypmpton of a high voltage flyback transformer problem. WARNING televisions generate potental lethal charge. the device called flyback is used to generate several THOSAND volts. so be carefull if you take the back of any television. along with the flyback the horizontal output transistor possible could have failed. What type of tv is it? model

Oct 01, 2008 | Televison & Video

1 Answer

Panasonic TV has blank screen with retrace line


retrace lines usually means screen voltage is to high . that could mean bad picture tube.or flyback.

But there is something you could try. Be careful high voltage.on the back on the flyback transformer there to adjustments screen voltage and and focus go slightly counter clockwise or in your case clockwise that pot addustment will make it darker or lighter.If this does not fix it you have a flyback oy tue problem.
I hope this helps thanks doctor video leadingedgeelectronics 1987

May 03, 2008 | Televison & Video

2 Answers

TV SCREEN VERY DIM


is your picture tube ok ? if is ok check for 200 volts line call boost voltage is comon problem 10 mfd 250 0r 350 volts

Apr 17, 2008 | Televison & Video

1 Answer

32 inch jvc av-32d302


Those are called retrace lines. The electron beam has to go back to the beginning of the screen as part of its raster scan. Normally it is turned down so that it can't be seen. There is a little adjustment knob on the high-voltage flyback transformer called "screen" that will hopefully adjust this for you. If that doesn't work it is an indication that the high voltage circuit is dying.
Hop Ya Fix It.

Feb 01, 2008 | Televison & Video

1 Answer

Brightness of picture


If you feel good about opening your set then you can try this: Look for the flyback (high voltage) transformer, with the thick red wire which goes to the top of the picture tube. There are 2 controls on the flyback transformer, focus (top) and screen (bottom)Turn the brightness and contrast all the way down and then increase the screen control until you see retrace lines, and then back it down until those lines just vanish. Return the brightness and contrast to normal and adjust the focus control, if necessary, for a nice sharp picture. Let me know if that brings your brightness back.

Aug 21, 2007 | JVC AV-27D104 27" TV

2 Answers

Horizontal white lines on top of screen


try to adjust the screen control in the flyback transformer. good luck

May 04, 2007 | Panasonic CT-27G14 27" TV

2 Answers

Horizontal 'pinstripe' lines on all channels


sound like the screen control on the flyback is set just a little too high. the flyback has the red wire attached to the tube. the flyback has 2 small adjustable controls. if you look close enough 1 is marked focus & on is screen. turn the screen slightly to the left & look at your picture. the screen is like a master brightness & if it's up too high you will see what is called retrace lines. good luck.

Jan 16, 2007 | Daewoo DTQ-20N3FC 20" TV

1 Answer

Picture is to dark


On the CRT PCB, there is a ceramic capacitor attached to the screen voltage circuit. Disconnect it and the voltage may come up. If it does, replace it. check your 200 volt line and see where it is, also. If this doesn't help, let me know.

Jan 13, 2007 | Samsung TXK3276 TV

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