Question about Philips Televison & Video

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Just replaced projection bulb, can see picture but overall picture is still dark. Bright in the middle, dark on edges. Tried adjusting controls but nothing works. Philips 50PL9126D. Thanks

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  • jandkwroblew Feb 04, 2010

    The unit is 3 to 4 years old. Can they be replaced?

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Hi,

How old is the Unit?

If that is 6 - 8 years, more often coolant in the tubes grows a fungus
and causes what you are seeing.

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!


Posted on Feb 04, 2010

  • taran_2005
    taran_2005 Feb 04, 2010

    Thanks for your response!!

    The Problem i mentioned is with Old Phillips Set. There could be Few more reasons that could Cause this.If you are getting Dark Pictures after few Minutes, like when you ON the TV the image is Correct and after few minutes it starts to Deteriorate / Dark, you might have some issues with bad solder connections on the picture tube's heater circuits, located on the High Voltage transformer section. In most cases, if you live in a larger town/city, TV Techs will generally just do a job like that for $100 to $150 at most.

    It's kind of a fast/easy fix for us. It gets much more complicated for the average Job though.

    That symptom you described where the picture gets darker after 5 minutes is due to the solder connections being cracked, and as the TV warms up they pull apart; your TV's heaters cool down you get less output from the picture tubes and once the connections cool down, they re-establish their connections and your picture gets brighter and the vicious cycle starts all over again.

    Other Possibility is that the digital board is failing, this could cause weird problems with the video and a dark picture so this is a good possibility for your problem. Bad news here is that this repair could run $500-$600 which is most likely more than the set is worth to you because you can get new 42" sets for about that same price.

    Let me know, if needed further assistance.

    Hope i helped you.

    Thanks
    for using ' Fixya ' and have a nice day!!







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