Question about Panasonic PT-43LC14 43" Rear Projection HDTV

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Screen Brightness I recently replaced my lamp on my TV because I had a problem with the unit shutting off at random.The new bulb took care of that problem,but it seems that my picture is still not very bright.I've got it set to the max setting and in the vivid mode.It looks pretty decent in the evening and low light conditions but I think it should be brighter.Is this common for LCD projection TV's? or could there be other problems with it.I've looked at the regular LCD TV's and they seem much brighter than the projection units.

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Re: Screen Brightness

What lamp did you replace it with? Some of the aftermarket bulb sources are not the original brand and do not work as well.

Posted on Dec 31, 2007

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You are correct about lamps working or not, but that is the extremes. Over the course of operation all lamps lose brightness as the hours add up. All lamps will lose their brightness over time.

Typically lamps only last at best 6000 to 8000 hours. That is not long if the unit is used most of the day everyday. In addition the cheaper the quality of the lamp, cost and manufacture, the quicker they go down hill.

Assuming that you have a low quality lamp what you are experiencing is normal. You may be able to improve the brightness and clarity of the picture by cleaning the lenses, mirrors and screen. I have a tip at

This tip is labeled projection tv but is also appropriate for cleaning an LCD or DLP unit.

Thanks for using FixYa and for the great rating.


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Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Have you studied your manual on lamp replacement? See Here:

as well as in your manual. Sometimes the lamp must be reseated
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as there are few user serviceable items for Plasma sets. Most
of the repairs are done by computer connection that downloads
the error messages and interprets what went wrong.

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