rear projection TVs

Discussion in 'Televisions' started by 128bitRGB, Aug 22, 2005.

  1. 128bitRGB

    128bitRGB Member

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    Heya all

    I've got a few questions which may sound a bit amatureish, but for the sake of knowledge, here I go...

    Do rear projection TVs require lamp replacements? and if so, how long does an average lamp last?

    Ok the reason for asking is because I recently bought a 2nd hand rear prjection TV (Toshiba 43inch #43N9UXA), and according to the seller, it's about 5 years old. Now the reason I wanna get a new TV in the first place is coz I have used a LDC projector as a TV for a few years and have found lamp replacing a hassel. Now there wouldnt be much of a point of me getting something else if IT needed lamp replacing as well.

    I've tried serching for the model number on google but there's an amazingly small amount of information on the internet related to this particular model (43N9UXA) and im wondering if anyone knows more about it.

    So yeah, any help would be appreciated.

    Cheers.
     
  2. mkaseatgb

    mkaseatgb Regular member

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    I'm dont think that you need to relace any lamp in a rear projections TV. I have had mine for abotu 6 years and the color is still great and i havent had to replace anything.
     
  3. TooBokoo

    TooBokoo Guest

    I thought that in CRT RPTV's the guns could burn out... Not easily, but I thought that sometimes they needed replacing. However, this is the case for every kind of TV... They all wear out at some point. None last forever.
     
    Last edited by a moderator: Aug 24, 2005
  4. 128bitRGB

    128bitRGB Member

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    yeah tht's what i thought too. We had a CRT RPTV at home like ages ago ( I think when RPTV first came about) and I dont remember the lamp in that burning out. But I have read posts on the net saying that LCD RPTVs only last for about 2~3 years before you need to replace the lamp..so that got me worrying.. maybe LCD RPTVs do need lamp replacing?

     
  5. diabolos

    diabolos Guest

    Gees people! All LCDs, DLPs, and LCos, projection TV's require a lamp as a light source (they are just projectors in a box, basicly). Most lamps last about 8,000 hours. Lamps shold be replaced one they reach half life (4,000) hours. At half-life the bulb will be half as bright as it was when it was bran-new. If you watch TV 5 hours a day you should replace your bulb about every 2 years. Now they do differ from manufacture to manufacture but there rules (lifespans) are generaly the same. Thats not saying that you couldn't go untill the thing burns out, but it your coverd under warranty that is longer that 2 years (I hope) you should use it so.

    The "Lamps" can be costly to purchase and install but installtion is pretty easy. On most you can do it yourself.

    As far as CRTs, they don't require Lamps. They use tubes to create images. These tube tvs contain 3 electron guns (red, green, and blue) that can become missaligned. All you would need to do is re-allign them and your good to go untill the tube gets runied (in about 30 years).

    Ced
     
  6. MovieDud

    MovieDud Guest

    I would encourage anyone who has dived into Home Theater to purchase Audio/Video Calibration Disks (Avia, Video Essentials. I have spent years calibrating Televisions for people, including myself, andmany are shocked to find out about how their contrast, brightness are critical in creating a home theater experience and how much longer their sets can last when your contrats, brightness, and color are calibrated properly. IF you don't want to buy a Test Disk, then use teh THX optimizer, you can do an adequate job this way as well. I have a 55 inch 16X9 HDTV widescreen. Beautiful picture and no deteriation of color.
    Hope this helps.
    MovieDud

    test disks can be purchased at many retails, or on line like www.widescreenreview.com
     
  7. diabolos

    diabolos Guest

    That is very true. The higher your brightness the faster your bulb will burn-out!
     
  8. 128bitRGB

    128bitRGB Member

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    the TV in question arrived today and alas!! It a CRT RPTV!! thank GOD it wasnt an LCD and therefor I dont have to worry about the lamp life or any other consumables no more!!!

    *Homer voice* Ahhh..... C....R....T....

    thanks heaps for all who helped out.

     

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