Question about Philips Projection Televisions

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We bought a Philips TV (model : 42PF9966/79) three years ago. Intermittently we are getting a thin black horizontal line through the middle of the screen. What is causing this?

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  • spade1 May 29, 2008

    I don't think it is a bad connection.

    Yes, it is a plasma.

    The line tends to disappear after about 5 or 10 mins after switching on but then sometimes reappears for a time.

    Also I don't know what you mean by the 'driver board' and the 'panel'.

    I am delighted at the fact that this has happened one month out of warranty.

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The model number you listed is bad. I think the last 2 numbers should be 37. But it sounds like a plasma tv. In that case the problem can be a bad connection from the driver board to the panel.
Take off the back of the set and reseat ALL of the ribbon cables on the far left and far right sides of the set. If this does not fix the problem, the panel is bad. This is not worth fixing. Buy a new tv.

Posted on May 26, 2008

  • Randy Sheppard May 30, 2008

    You need to call Philips ASAP. Do not waste anymore time. Call them. The soner you call them, the better, they MIGHT cover the repair.

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I have an older model Hitachi 32" ultravision CRT tv. the video just collapsed into a thin horizontal line (about 1/4"). Video is fine. Any help would be greatly appreciated. Thanks.


TURN IT OFF AND DO NOT TRY TO USE---if a thin line left to right in middle of screen it is vertical problem---the set should shut down but even seconds count here--this can burn a mark on all three picture tubes instantly and it is permanent.

Problem if small line left to right in vertical circuit.

Let me know what you know and I will try to help--I know these sets very well.

SD TECH

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Good Day, LDS also;
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