Question about Philips 32PT6441/37 32" TV

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No video signal ,flyback lines on my 29pt philips

I have a black 29pt picture in picture CTV that is switching on with sound but no picture .i tried increasing screen voltage and there will flyback lines on the screen. can you help me to solve that problem .i am a technician in zimbabwe .

thank you


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Re: no video signal ,flyback lines on my 29pt philips

Help is here. back off that screen control tell them lines go away.

you have these things working Powersupply, Vertical, High voltage, sound, leaves video problem , go the the video circuit on schematic and find the video out transitor or ic or whatever they use, check to see if proper voltage or better yet see if got video with a scope, I see allot of shorted video out transistors.
also check and see if you can inject video with a vcr out to the tv in.

Posted on Jan 19, 2008

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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

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

Apr 17, 2015 | Standard (CRT) Televisions

1 Answer

Black screen, sound ok.flyback lines when G2 turned up

Never tune G2 voltage too up to a state, to appear retrace lines on screen. it is bad. It might make the CRT damaged. Check the video output card, and the voltages comes to it. This card can be located at the neck of the picture tube itself, will directly plugged to its back of the neck. Reduce the G2 voltage, in such a way that, there is no retrace lines appear. Be careful. To get some details, Pull up older posts

Dec 12, 2013 | Standard (CRT) Televisions

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We replaced the transformer for our RCA F27650. It was sparking and now it is not, but now the screen won't turn on. It is just black. We hookd all the wires up like they were. we can hear sound, but...

Along with the flyback transofrmer, its horizontal output transistor also must be replaced. I don't know whether you have replaced it or not. If not, replace it too. It can be located very near to the flyback transformer, a three terminal component, black in colour, usually screwed to a metal heatsink. Then switch on the TV and measure the video output voltage at the video output card pluged directly to the picture tube neck. The collector of the video aoutput transistors must come around 145VDC. If it also is there, advance the screen control on the flyback transformer to get a raster. If that voltage is not there, it means that the flyback transformer is not working, and horizontal oscillator stage should be checked for oscillation, check the lined drive transformer for its primary winding open, Check the entire horizontal oscillator section. The collector point of the line drive transistor, the transistor that drives the line drive transformer, a small transformer soldered diretly to the printed circuit board; should be checked with frequency meter. The frequency at that point should come around 15525HZ approx: OK.

Mar 19, 2011 | RCA F27650 27" TV

2 Answers

GET SOUND BUT NO CLEAR PICTURE ONLY HORIZONTAL LINES form bottom to middle black blur lines

Video output section of your tv is in trouble. Either it not gets proper voltage [low voltage if voltage is there]; or video output Ic or transistors whichever used may got damaged. Never switch on the tv in this condition; that picture tube may get damaged. Get it repaired soon.

Oct 14, 2010 | Philips Magnavox 20MT133S 20" TV

1 Answer

Panasonic TV no sound no picture


Aug 23, 2009 | Philips 27PT543S 27" TV

1 Answer

Philips Magnavox 36" @10yr old has perfect sound and black screen

checked the vedeo section of the main PCB of the unit, maybe some defective parts, try to look the back of the picture tube if theres a light, if none, cheke also the horizontal section, especially the flyback transformer

Jul 31, 2009 | Philips Magnavox TS3260C 32" TV

2 Answers

On switching Philips Tv type:21PT 240B/94R no sound,picture

I have Philips CTV 21 PT 240B/94R. and this time a problem are when set on chenel are not stop to change only forward and bottom right side Display Scan+

Jan 29, 2009 | Standard (CRT) Televisions

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tbrace, your picture tube is getting a little tired, the "IK circuit" is causing the blanking of the video because the tube is not returning a large enough signal back to the IC that monitors it. Theres only one fix (besides replacing the tube) for your set and that is to turn up the screen control. You have to remove the back from the set and on the right hand side there is a large plastic part called a flyback transformer, with a heavy wire coming out of the top which goes up to the picture tube, mounted on the front of this transformer is 2 black blastic "philips type" controls, one over the other look closely and one will be marked focus(do not turn that one) and the other is the screen control, turn the set on and SLOWLY turn the control clockwise until you see a bright picture with white lines in it, once you see the lines turn it back until they disappear, (check several channels to be sure they are gone) your done, may last 3 weeks, may last a year, it`s all you can do, BMW Rider

Dec 14, 2007 | Standard (CRT) Televisions

1 Answer

Tv showing blue screen with flyback lines sound ok

Flyback lines? Is the picture all white with no brightness control with faint horizontal faint lines? If this is what you are saying, the screen voltage could be bad, and if thats the case, the picture tube or the flyback itself could be bad. You could also have a bad connection on the crt socket

Dec 27, 2006 | Philips Magnavox 20MT133S 20" TV

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