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Demtec tv tft lcd realy dark picture - Projection Televisions

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Hi,

Interpreting your description could mean that everything works except that it is dark. This being the case, then it could be indicative of defective:

  • CCF lamp(s) (cold cathode florescent); and or
  • inverter.
Depending on the size, there could be two or more lamps. The lamps provide the backlight similar to the LCD panel display of a cellphone. These lamps are powered by a high voltage/high frequency board called the inverter.

This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Oct 01, 2008

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Coloured linens down the screen

Posted on Dec 30, 2008

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Ihave a Philips 50PL9126D tv and I just replaced the lamp because the picture was very dark. I can see the picture but it is still somewhat dark, bright in the middle,dark at the edges. I tried to adjust...


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Adjust video settings:
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If picture is still dark, you need to replace the lamp again. Sony recommends that you replace the lamp:
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Dirt doesn't cause this problem unless your are a smoker or have the unit "literally" outside. DO NOT try to clean it or let someone tell you to do it because it will cause more problems than it fixes.

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http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

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