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Projection tv PT51G35B dark in contrast i believe have to watch tv in the dark tried to adjust for brighter picture but can't get ne brighter have to watch tv in the dark what will fix this

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  • marine49896 Nov 20, 2009

    yes it is dark on everything dvd-game-vcr etc etc

  • marine49896 Nov 20, 2009

    good enough for now

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Hello: Have the ABL (Automatic Brightness Limiter) Circuits checked for leaky diodes, Also the flyback transformer mybe producing low High Voltage. Low high voltage will cause the picture to become dim, to finally no high voltage and protect shutdown mode will activate. Make sure you have 140V B+ Voltage also to the B+ terminal of the flyback transformer. Considering the age of this unit I am very douptful you will be able to find replacement boards for this unit, so board level repair is optimal at this point. Check and if needed replace Q561, C302, and D583 on the high voltage deflection Board.

Posted on Nov 20, 2009

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Some simple answers I need:

Has the set ever been serviced since you bought it?

Does it have the problem on all inputs--tuner, dvd etc/


There are depending on your answers a few things to do.

Keep in mind possible time difference between wherever you are and me, I am in California and will be here for the next few hours.

Thanks for using Fixya!

SD TECH

Posted on Nov 20, 2009

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