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Projection Lamp for projection TV

Discussion in 'Electronic Repair' started by Andy, Jan 22, 2007.

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  1. Andy

    Andy Guest

    Andy asks:

    I see these TV projection sets for under $1000 and it seems like
    a good deal until I read that the lamp has a 90 day warranty or some
    other short time.... And, from what I can find, the replacement lamps
    are like $500 each.....

    Does anyone here with experience in these items care to take
    a minute to talk about the best, most reliable, projectors... or any
    comments on lower cost projection lamps ?

    Thanks in advance,

    Andy in Eureka, Texas
     
  2. Art

    Art Guest

    Suggest not using any of the "Cheap" lamps in any of the units currently
    available. The results of using some of the items, such as the LTI supplied
    lamps, have only proven to cause more customer aggravation than want it is
    worth. Stay with the manufacturer recommend replacement lamps. I'm sure
    there are many other opinions about this subject but after servicing
    multiple products by different manufacturers we find the previous
    recommended suggestion viable.
     
  3. We sell mostly Sony and Mitsubishi RP sets and most of our clients come to
    us when they have problems. Most have been getting 7000 to 9000 hours from
    their lamps and most of the lamps sell for between $200 and $300. FP lamps
    are higher powered and do not last as long and are usually more expensive.
    The question is so broad that it is hard to give good advice. It is hard to
    generalize. Are you referring to front projection systems? I suggest that
    you choose a model that appeals to you then check the specifics for that
    unit.

    Ditto Art's comments on replacements.

    Leonard
     
  4. Tim Schwartz

    Tim Schwartz Guest

    Andy,

    Many front projectors need lamps in about 2000 hours, and it is a bad
    idea to try to reset the timer until the lamp just blows, as it can
    cause serious damage to the projector. In some cases, it might kill
    power supplies when it goes, or it might shatter, causing shards of
    glass to go everywhere. Some lamps contain mercury and you certainly
    don't want one of those shattering. Heck, it probably costs 10 cents an
    hour for electricity to run the projector, you just don't get it as a
    single item bill.

    You have to look at the lamp as an operating expense of the projector.
    So, if the bulb is $400 and lasts 2000 hours, that's 20 cents per hour
    for a lamp. It's sort of like buying $400 worth of tires for you car
    every 40,000 miles. It's a 1 cent per mile cost.

    My father uses his projector several hours per day, and I just replace
    the lamp in his 20 month old projector, which was worth doing. I use my
    projector much less, around 5-8 hours per week. So I expect that when I
    need a lamp, my projector will be 8 or 10 years old, and I'll want to
    replace the entire projector, as the technology will have made advances
    (or so I hope) by then.

    Hope this helps you make a decision. Also, I agree with the other
    replies, use a factory approved lamp.

    Regards,
    Tim Schwartz
    Bristol Electronics
     
  5. jakdedert

    jakdedert Guest

    BTW, 2000 hours is getting to be the standard, but half that used to be
    common...and still is for high-powered presentation projectors.
    the only way I'll buy one is if I have some possibility of gettng some
    rental income from the deal. That's a possibility in my business; but
    clients are buying their own much more often as they get smaller and
    cheaper.
    You're father may find that after a bulb change or two, that other parts
    of the unit begin to deteriorate, depending on the model and make. LCD
    panels warp from heat and sometimes discolor or quit entirely...likewise
    polarization filters and other plastic parts. Power supply components
    are not always spec'd for long life and fall victim to under-rating and
    heat.

    That's a lot of BTU's to contain in such a small place. Make sure it
    gets adequate ventilation.
    I'll buy one eventually; but I'm put off by the proprietary nature of
    the bulbs. I wish there was a viable alternative....

    jak
     
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