Question about LG Televison & Video

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LG 52SX4D-UB DLP TV - tv tries to come on with the white lights scrolling from bottom to top and then the bulb light flashes 10 times and then the power light stays red - my question isit sounds like either the bulb or the ballast how can i check either one parts to determine if they are good or bad - i have component level experience but cant find a schematic to check the ballast (input/output voltage) Please Help! thanks, michael

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  • phatcav Oct 14, 2010

    i dont belive the lamp even tries to light - lamp hasnt been replaced before and all fans run properly.. but tell me more about the ballast board what do you mean by "They Ck Big capaciotr on the Ballast board,alot of times when it is the lamp the ballast board has a spark cap on it that looks look a big Diode blue and white it will ark"

    thanks,
    michael

  • phatcav Oct 18, 2010

    i ordered a new lamp friday - hopefully that will fix it! thanks

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  • Master
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Checking the lamp in another working television would be the best way to identify whether it is the ballast or the bulb which is the source of the problem.
Cheers. Thank You.

Posted on Oct 16, 2010

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If Lamp has never been replaced, Lamp will be the problem . Mats has them for $99.00 1-800-628-1118
First check all the Fans make sure they are running,if they are OK,They Ck Big capaciotr on the Ballast board,alot of times when it is the lamp the ballast board has a spark cap on it that looks look a big Diode blue and white it will ark.If Lamp trys to light and Lamp Fan Stops running then Lamp will not light means defective Lamp Fan.
Encompass Parts Distribution has Parts for this Model 1-800-638-3328 or Visit their website and type in your Model#.

Posted on Oct 14, 2010

  • ladywinn
    ladywinn Oct 14, 2010

    If the Big Capacitor or any capacitors are vented or puffed up on Top they are Bad.

  • ladywinn
    ladywinn Oct 14, 2010

    I would Replace the Lamp that should Fix your TV.

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If you want to test the ballast then you are gonna need the schematic which can be downloaded from the link below.
http://www.free-service-manuals.com/Television/LG_Televisions/LG_52SX4D-UB_Service_Manual_L26770/
The ballast has two DC out pins accross which you have to measure the voltage and compare it with the voltage in the service manual. Be careul. The ballast output voltages are usually in the range o 500V minimum and upto 1000V in certain models.

Posted on Oct 13, 2010

  • eagle338
    eagle338 Oct 18, 2010

    If the lamp is not coming on at all then its definitely a ballast issue. That is why I have told you to test the ballast. Why did you reject my solution without even testing it first?

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Michael c250,

I have fixed 100s of DLP projectors and have yet to see a bad ballast, but that does not mean yours couldn't be the first. More than likely from what you have descibed your lamp is bad. They have a limited number of hours, approx 6 to 8 thousand. Sounds like a lot until you do the math. Generally a lamp is done in about 6 years. In addition if your lamp light is flashing you definitely need a lamp.

I have a tip at http://www.fixya.com/support/r4168009-change_lamp_in_dlp_projection_tv which explains the problem, how to identify the problem and how to remove and change the lamp as well as where to get the new one at the best price for the quality. If you remove the lamp and it is cloudy it is definitely bad. Follow the instructions in my tip and do not touch the lamp with your bare hands.

Thanks for using FixYa and for the great rating.

hardrocko

Posted on Oct 13, 2010

  • bobby caesar Jul 14, 2013

    hey kim am bobby caesar a member with fix ya i do have a problem with lg dlp tv model re-44sz21rd its color is greenish n i wanted to access the submenu as9883 in the ez main menu how do i activate the ad9883 cos its not highlighted in white as the other coices meaning when i scroll down to choose it the pointer skips it how do i go about it cos i have the ad9883 values to input?

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