Question about LG RU-52SZ51D 52" Rear Projection HDTV-Ready Television

2 Answers

TV keeps shutting down

My lamp went out on my television LG DLP RU-52SZ51D. I recently replaced the bulb and the television worked fine for a couple of days. However, there was a loud humming noise coming from the back. After a few days, my television will not come back on it will blink one yellow light and then two red lights will blink and the television will no turn on. I opened the lamp back up to find that the bulb is still good. Does anyone know what I need to do.

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  • Edward Sample Jun 09, 2007

    Okay do I need to replace the entire bulb again or do I need to replace the balast. Or better yet is the balast replaceable.

  • Edward Sample Jun 09, 2007

    Do I need to replace the bulb again or the balast. Or please tell me what do I need to do. My television has been sitting up for a while.

  • Anonymous Mar 12, 2014

    When turning on the tv there is an extremely loud droning noise. This lessens a little as the set warms up but remains a consistent hum. It only stops when the set is turned off.

  • Anonymous Mar 19, 2014

    Bulb has been replaced and TV worked well for a few months, now goes on sporadically until picture disappears and blinking red indicator lights on the right of the TV come on.

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2 Answers

What do you mean by bad ballast?

Posted on Jun 08, 2007

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  • 203 Answers

Sounds like it may be a bad ballast

Posted on Jun 08, 2007

  • Benjamin Madison
    Benjamin Madison Jun 09, 2007

    DLP TV's use a lamp similar to a florescent. They have to have a ballast for power. The ballast regulates voltage to the light (ie High voltage at start-up, lowers voltage over time until the lamp is running smoothly.

    If you've removed the back of your tv the 2 wires running to the lamp housing come from the ballast.

  • Benjamin Madison
    Benjamin Madison Jun 10, 2007

    The ballast is a replaceable unit. Removing the back cover of the TV would expose it. If you follow the 2 wires that feed the lamp it will lead you right to the ballast.

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