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Sony rear projection TV lamp problems !!

Discussion in 'Electronic Repair' started by Kenno24, Jan 15, 2007.

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  1. Kenno24

    Kenno24 Guest

    I own a Sony KF-WE42 rear prolection TV I am sad to say. The set is 16
    months old, has run for 2600 hrs. and is now on an extended warranty.
    The lamp has failed,Sony don't want to know and the extended warranty
    does not cover a new bulb. Sony will not even offer a pro-rata on the
    price of a new bulb. They say that it should last between 6000 and 8000
    hrs. YEAH, RIGHT !!!!!!!!!!!
     
  2. JANA

    JANA Guest

    I discourage our clients from buying any type of rear screen technology,
    especially the ones that use lamps. The lamps are expensive, and do not
    always last. Sometimes they will go more than the full rated hours, and at
    times they will not even get half the rated hours. A lamp is really an
    unpredictable device. In theory, if the temperature of the lamp is well
    controlled, and it is not power cycled very often it should last longer.

    I personaly would get the set working, and then put it up for sale. Then go
    and get a good flat panel type TV set that does not use projection
    technology. The LCD sets should give you at least 50,000 to 60,000 hours
    before there are any problems. With LCD sets, there will be no lamp changes.
    With the rear screen sets, by the time the life span of the set is over, you
    would have spent more than the difference than if you bought a high end flat
    panel LCD set in the first place.

    --

    JANA
    _____


    I own a Sony KF-WE42 rear prolection TV I am sad to say. The set is 16
    months old, has run for 2600 hrs. and is now on an extended warranty.
    The lamp has failed,Sony don't want to know and the extended warranty
    does not cover a new bulb. Sony will not even offer a pro-rata on the
    price of a new bulb. They say that it should last between 6000 and 8000
    hrs. YEAH, RIGHT !!!!!!!!!!!
     
  3. James Sweet

    James Sweet Guest


    Power cycling is very hard on discharge lamps in general. Metal halide
    lamps for general illumination are often rated 15K hours @ 10 hours per
    start. Sports field lamps are normally somewhat higher power, but are
    normally rated at 3K hours @ 3 hours per start. The warmup cycle puts
    very high stress on the electrodes.
     
  4. Guest

    LCD sets _will_ require backlight lamp changes, only less frequently.
     
  5. Do you know anyone who has changed a backlight in a consumer LCD flat panel
    display? If you do it is a rarity. They are not only very reliable, and
    likely to outlive many of the other components in the sets, but are usually
    not available as replacement parts.

    Leonard
     
  6. You buy a sony and it only works for 2600 hours, huh?
     
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