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Samsung HDTV/DLP blows bulbs

Discussion in 'Electronic Repair' started by SparkyGuy, Mar 16, 2007.

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  1. SparkyGuy

    SparkyGuy Guest

    50-inch Samsung model HLN507W had it's bulb replaced by a service tech from
    the local shop. Replacement lasted a 1 day.

    Anyone have experience with this model? What should I suspect is causing
    bulbs to burn out? A common problem?

    Are there troubleshooting or service docs available on-line?

  2. Maybe a problem with the ballast or something to do with the
    Call the tech and have him fix the cause as well as a new bulb.
    The bulb should be under warranty but expect to pay more if there is an
    additional problem.
  3. tez

    tez Guest

    Your tech should have checked the voltage at the bulb socket. If not
    get them to check it before replacing bulb. Sounds like an over
    voltage or voltage surge problem.
  4. Jamie

    Jamie Guest

    bad ballast ?
    We just replaced a Lamp&ballast today at work because of a bad ballast
    over voltaging and burning out the lamp. Normally you may detect extra
    brightness abilities before it goes out. Now the lamp we replaced today
    was used just for over head lighting how ever, these lamps are the same
    technology used in DLP rear projection.
  5. Jerry G.

    Jerry G. Guest

    The service manuals from the manufactures are not free of charge. They
    are copyright material. Some manufactures will not sell service
    manuals to non authorzed service reps.

    The common causes of the pre-mature blowing of projector lamps is
    improper cooling, or the power supply is out of specs.This should be
    properly checked by a service tech who is familiar with the unit and
    has the proper service information to take reference with.

    It is possible that the lamp you bought may have been defective from
    new. We've also seen that before.

    Jerry G.
  6. Ken G.

    Ken G. Guest

    How do you know its the bulb this time ? unless it shattered inside .
    Samsung usually has a good reputation for bulbs lasting .
  7. Meat Plow

    Meat Plow Guest

    I freely admit knowing nothing about DLP other than it has a high
    intensity lamp and a rotating color wheel :) Is the lamp incandescent like
    a Halogen or some other technology hence requiring a ballast of some sorts.
  8. James Sweet

    James Sweet Guest

    Checking the voltage won't reveal anything, it may however destroy the
    meter from the starting pulses. HID lamps are current driven, the lamp
    voltage will settle at whatever the particular lamp likes, the current
    you force through it determines the wattage the lamp runs.
  9. James Sweet

    James Sweet Guest

    It's a compact metal halide or super high pressure mercury vapor lamp.
    Both are discharge lamps requiring an electronic ballast.
  10. Meat Plow

    Meat Plow Guest

    Thank You.
  11. And if it did shatter, this may have also been due to improper handling
    during installation.

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