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My Philips 47 inch PFL9632 D/10 has a problem. The background of the picture which should be black sometimes starts showing red or green vertical lines. Plus the parts of the picture which should be black or dark colour are showing shades of red or green. The problem is intermittent sometimes the picture is perfect than all of a sudden it deteriorates as described above. What is my problem?

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  • toniocachia Dec 31, 2010

    Was hoping for more details.

  • toniocachia Jan 02, 2011

    If by no input screen you mean setting the tv on a channel which has no channel reception than yes, if the screen has the red lines whilst watching a TV channel and than you change the channel to for example EX2 which has no reception the red lines are still present.

  • toniocachia Jan 03, 2011

    Hi the problem was the cable that connects between the T Con Board and the Main Board.
    The connector going into the T Con board was loose I plugged it in well and now the TV is back to normal...
    Since I have never moved the TV from its place and its been at me for over a year. I suspect this was an error from the factory.

  • toniocachia Jan 03, 2011

    Hi the problem was the cable that connects between the T Con Board and the Main Board.
    The connector going into the T Con board was loose I plugged it in well and now the TV is back to normal...
    Since I have never moved the TV from its place and its been at me for over a year. I suspect this was an error from the factory.

  • toniocachia Jan 04, 2011

    Very helpful pointed me immediately in the right direction, Saved me a lot of cash as I avoided paying the exorbitant dealer charges for collection inspection etc.
    Job done at home in 20 minutes.

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Image corruption caused by either an overheated/failing image processor or a bad connection between the mainboard and the T-con board. You will have to open the back of the tv and inspect and reseat the cable that connects the 2 boards. Then clean and inspect the status of the radiator located on the processor: if it's in a correct position, if it's firmly attached and if the air vents are clean.
If no improvement is observed then the defect is advanced beyond recovery, you will most likely be forced to replace the mainboard. This is a job that's better to leave it to a pro.

Posted on Dec 30, 2010

  • Azrael SRL Dec 31, 2010

    The image processor stores the data for the image pixels in an memory buffer part of its chip. The data for the pixels is stored in an bitmap format: each pixel is defined only by its color that is encoded in a standard hexa way., see here
    http://html-color-codes.com/
    The hex id for black is 000 which is composed only from 0 bits. If the processor overheats the memory cells that hold those 0 bit code will shift on their own to 1 , the end result being that what was supposed to be black now is another color. This shift happens in all the data for the pixels in the buffer, just that the result is clearly visible only in dark parts of the image.
    The same process happens if the data connection between the processor and the T-con board (the board that transforms the image data in actual commands for the pixels on the LCD panel) is faulty and the data flow is corrupted.

  • Azrael SRL Jan 03, 2011

    Since your problem has been solved would you accept my answer?

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When the problem appears check whether the weird colors exist on the no input screen or not and let me know. This will help us zero in on the exact location of the problem.

Posted on Dec 31, 2010

  • eagle338
    eagle338 Jan 02, 2011

    Perfect. Thats just what I needed to know. You have a malfunctioning T-con board. It is very easy to replace and inexpensive(costs about 50-75$). If you would like to fix it yourself, then remove the back cover of the tv and get me the partnumber of the board from which 2 ribbon connectors go into the LCD panel so that I can find you a replacement.

    Sai.

  • eagle338
    eagle338 Jan 03, 2011

    Glad to hear that! I knew it was a problem with the t-con, just missed out on the loose connector thing.
    Please do accept the solution since my advice did point you in the right direction.

    Sai.

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Guest
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I have a Philips 30 inch LCD and solved the problem by using the circular arrow button on the TV remote. Pointing it at the TV and clicking "right" (3 o'clock on the button), the picture moved right. Same thing on for "left". Worked for me.
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    • c7carl
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    WOW! It works!! The picture on my Magnavox (aka Philips) 37MF321D had shifted to the right. I figured I had a big repair bill coming up soon. But hey! Just used the TV remote as described by "Guest', and re-centered the picture to the left. Wallah! Thanks ""Guest" whomever you are! Reply

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