Heat, plain and simple. The average lamp life expectancy is 2000 hours before they start acting up.
Why? Because the lamp itself has a quartz envelope and as it heats up, it changes shape (usually at the bottom of the bulb) which lowers the internal lamp pressure causing it to draw more power to keep it lit, which in turn, generates more heat, etc. It's just the `circle of life'.
A UHM lamp uses a special socket connector, a UHM connector, invented by 3M. Panasonic projection TV's typically use this connector.
The lamp is usually located on the lower left or right side of the housing. Each model of TV is different, so have a look around the TV for a square hatch, about 4 inches by 4 inches. There should be 1 or 2 screws holding it in place.
I would look on eBay for the same or similar model. Buy the whole tv for the parts you need. Mke sure you also keep the lamp if it is still working.
Projection TV lamps a quartz envelope, inside which a gas resides. As the lamp heats up, the quartz tends to distort at the base of the lamp from all the heat generated and it generally bulges out some at the base. What this does, is lower the pressure of the gas inside from the extra room created inside the lamp by the bulging area and that causes it to require more energy to keep it ignited. This of course also generates more heat which tends to make the quartz envelope hotter and it expands even more, requiring more cooling. If your TV can't provide the extra cooling, the TV's going to protect itself and shut down the lamp. The general cure is to replace the lamp, which should run cooler until the process eventually starts all over again. In average terms, you should only expect about 2000 hours of use from a lamp before they develop symptoms.
No it doesn't have to be dark.. Bt if it is dark. And it would be u can see clearly. Most home cinema systems have high lumen lamps for use in daylight conditions. How bright the image appears will depend upon the strength of the projection lamp, the distance from the wall, the brightness of the room and the material projected on to. For indoor household daytime use, a 2000+ ANSI lumens projector will be needed. To get the best image, use a projection screen or reflective wall paint such as those offered by Goo Systems.
RCA replacement projection TV lamp can be purchased from Top Bulb. These are also available at Pure Land Supply, and Electronics For Less.
A Mitsubishi DLP lamp is the Mitsubishi brand of digital light processing lamp used in rear-projection tvs and projectors. It supplies the light necessary to make the projection.
Lamp needs replacing
A Panasonic TV lamp is for projection televisions that have burnt out their bulb already. If you need to replace your TV lamp then you will have to probably get someone to do it for you unless you are comfortable with your technology abilities.
The projection lamp, from the sound of things.
Rear projection TVs are powered by a high-luminosity lamp. This lamp shines light through an LCD screen, creating an image on a rear-projection TV screen. Many TV lamps have a limited lifespan, requiring replacement after several thousand hours of use. When replacing a TV lamp, find the model that works for a certain TV brand. After purchase, locate the access panel on the back of the TV. Remove the old lamp, and clear the area of all dust. A great way to clear dust is with a vacuum cleaner or compressed air. Install the new lamp, and replace the TV panel.
This is a replacement part of Panasonic rear projection televisions. The lamp provides the light for the images on the screen. www.howstuffworks.com has a great guide to how they work.
If it's a TV that uses a projection lamp, then the lamp or ballast is going bad.
Average lamp expectancy is about 2000 hours. If the TV shuts off the lamp intermittantly and then powers back on after a minute or so, a lamp change is probably in order.
A person can find replacement parts for any brand of projection TV lamp on Best Buy. They offer a wide selection of lamps and also other objects that may come in use.
Sounds like your projection lamp is about on its last legs. They do that because as they age, the quartz envelope inside changes shape and gets a bulge (usually at the bottom) and that causes the internal pressure to drop, which in turn makes it harder for the ballast to keep it lit.
The Toshiba TB25 IMP is actually a small lamp that is found in some models of Toshiba projection televisions. This particular lamp replacement is compatible with several Toshiba projection televisions. Amazon sells them and you can see if it will be compatible with your television.