With only 3550 hours and 3 years on my Mits DLP, I decided to do a lamp replacement. What applied here should also apply to Samsung as well as other DLP's.
I did notice a drop in light output after the first 1.000 (or so) hours, though gradual, it was noticeable. After 2,000-2,500 hours it was even more noticeable, so much I engaged the "Deep Field Imager" to provide a 'boost' in contrast/brightness to help make up for the drop in light output in spite of the fact I'm not a fan of these 'gimmicks'.
2 1/2 years & 2500 hrs. later, the replacement's light output has fallen below what the original lamp did after the first 3500 hrs to a point watching TV during the day has become a problem.
I did some extended searching and was very troubled in what I was seeing. Reviews on Amazon were showing numerous reports of lamp hours on these no-name replacements as short as days to weeks in the $42-$75!
This was not just a couple of entries. The other disturbing discovery was the number of complaints that the lamp received was not what was described or shown. Including ads showing photos of Phillips lamp boxes and receiving something else.
I came across two interesting statements by two different sellers. Both stated a quality difference between the original Osram/Syvainia lamp and a Phillips. One even went as far as not offering any extended warranty on t non Philips lamp;
http://stores.ebay.com/DISCOUNT-TV-LAMPS/General-Lamp-Information.html (click on General lamp info in the lower left corner)
There is only handful of genuine lamp manufacturers in the market such as Philips, Ushio, Pheonix, Osram, Matsushita, with Philips being the leader in the industry. There is the common misconception among customers that television manufacturers manufacture their own lamps but it's not correct. For example, all Sony televisions come with a Philips lamp. In fact around 4 out of 5 televisions in the market come with a Philips lamp.
2. Why genuine lamps?
Lamp is an integral part to bring outstanding brightness and color to your projected video display. Every component from the lamp, through the optics, power supply, electronics and including all processing algorithms are harmonized to give an optimum image.
Rich colors matter, but so does color uniformity. A genuine lamp guarantees the exact chemical mix and optical alignment to give vibrant and consistent color across the whole image.
Lamps operates at extremely high temperatures, this high voltage, high pressure quartz and glass component is safe to be handled and fitted by the customer, due to the scrupulous manufacturing and testing processes employed. For peace of mind, install
only genuine parts in your television.
With a genuine lamp you can enjoy a full lamp lifespan from your television replacement lamp. Uniquely engineered to operate with the television's electrical components, only genuine lamps can assure you full life performance and keep the television warranty valid. For example Sony, Samsung, and other major television manufacturers will VOID your warranty for using counterfeit lamps. You don’t have to take our word; you can call your manufacturer to confirm!
3. Why we recommend PHILIPS?
The A.C. based high pressured lamps pressure mercury lamp for projection is a patented invention of Philips. The lamps are manufactured using high quality standards and technology. The usual life span on these television lamps are much higher than any other lamp in the market, so per the cost benefit analysis you'd be better off purchasing the Philips lamp.
4. What is Generic and why should I avoid it?
Generic lamps are built using the substandard components and build techniques that will result in a shorter life of the lamp or may even represent a safety issue. The main component of a lamp is the burner inside, and manufacturing of that is a complex task and requires high quality components. Burner in generic lamps are often made out of substandard components and does not match the required engineering capabilities, which results into less compleling colors and low lifespan. Click here for more information.
Generic Manufacturers: DNGO, Pureglare, No Lamp Brand Name Listings
The Philips conducted an independent study, undertaken by KEMA, into the quality of a range of copy lamps versus genuine lamps. The study concluded that the poor component selection and build quality, on average, reduced the brightness of the projection by over 30% to 50%. Click here to view the KEMA report!
5. For TOSHIBA lamps?
Most Toshiba televisions uses D.C. (direct current) lamp for projection. Toshiba use PHILIPS for some of their televisions as OEM, however most televisions utilize DC technology and PHILIPS does not make any DC lamps. There are only two major manufacturers of DC lamps: Phoenix & Ushio. Both lamps are designed with high quality standards and both lamps usually have same picture quality. Again BEWARE of the generic Toshiba lamps as it might affect the ballast or light engine of your television. If any seller is not mentioning the lamp brand name, you should question it... why?
Edited by videobruce - 11/28/12 at 7:01am