Question about Philips Magnavox 27MS343S 27" TV

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Weird arch like lines

I have projection TV that has these lines on the left side of screen. They look like an arch and they cause the picture to bend with it and mess up the colors. What should we do? Maybe just clean it...I hope...thanks

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  • Holly James Oct 08, 2007

    heres a pic of my problem, the picture is a little blurry, but it doesnt look like. the green line thing is the problem, thanks for you help.

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Hello HollyJ, If possible can you post a picture of the problem, It would help in determining if this is a convergence problem or a pincushion circuit problem. You description while good is a little to general to many possible issues. This sounds like a defection issue but I would not be able to tell unitl I see a picture of the screen, take the picture with a digital camera and the post it to the page using the add image link on the right side of the dialog box. Thank you, Shuttle83,

Posted on Oct 07, 2007

  • Henry McKelvey
    Henry McKelvey Oct 08, 2007

    Hello HollyJ,

    This is a convergence problem. What you need to do is get a schematic and a DC voltmeter and look at the voltages on the pins of the convergence ICs to determine if these are the problem. If these are bad you will need to replace both of them.

    If the ICs are not bad then you may have a convergence board problem, you will have to use the voltmeter to look at the voltage inputr and outputs of the convergence board. This includes the yoke transformers on the CRTs also which may require you to use an oscilloscope to measure these test points.

    Cleaning will not help this problem. If you do not have a background in electronics please take the television to a shop for repairs, at least you now know where to tell the technician to look for the trouble.

    Thank you,

    Shuttle83

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The most likely cause is shorted convergence chips and possibly a few pico fuses.

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Yours may have one or more of the following symptoms...

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Here are some of the most common symptoms and example photos of a convergence problem
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Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

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2c07611.pngSolution #1

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Picture of a set that needs the fluid changed.

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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