What bulb is needed to replace in the projector?

open the bulb assembly and check if the bulb has fused / broken into pieces.if not then the ballast unit that powers the bulb is at fault and needs replacement
if the bulb has fused/broken , then probably the bulb that u had replaced 3 months back wasnt genuine!

Did you touch the bulb with your bare hands when replacing it? Should use a clean cloth of tissue to hold the bulb. Our hands have oil that might cause th bulb to overheat.
Some projectors need to reset the bulb counter in the machine. Check this procedure in the manual, to see whether it is required or not.
Another problem might be the air filter needs cleaning.

That's a safety built in, telling you bulb needs replacing. there's no overide switch or function. Bulb needs replacing.

Hello there,If your movie projector light bulb has stopped working, there are some simple steps to take to get your movies playing again. The hardest part may be finding the correct replacement bulb. There are so many different models with their own specific bulb. Here are some steps to follow to replace your burned out light bulb.

Locate the bulb in the movie projector. You may need to use a screwdriver to open the bulb compartment. Check your owner's manual for proper procedures.

Step 2.Remove the movie projector light bulb or lamp. The bulb must be cool before you take it out. Use a tissue or cloth to remove the bulb because the glass bulb is very fragile. Do not throw away your bulb yet, you may need it to help find a replacement.

Step 3.Find replacement bulb. The Better Lamps website offers a wide variety of light bulb models. From their homepage select the brand of movie projector you have and using the model number from your old bulb, buy a replacement.

Step 4Replace the movie projector lamp or light bulb. Do not touch the bulb with your skin. This can transfer oils from you onto the bulb resulting in a hot spot which can make the bulb burst. Use a tissue or cloth to handle the new bulb to screw it back into place and then replace the cover.

Do check whether the fan is working properly. The shutdown might be due to overheating of the high intensity bulb. To replace the fan is much cheaper than the bulb. Check it out first before you replace the bulb.

You need to reset the light counter. Access through right most menu item. Then arrow down to lamp settings.

Bulb or lamp? either way this should help.

http://www.lumenarc.co.uk

Hi, Follow :- http://www.wikihow.com/Replace-a-Projector-Lamp There is a Video as well on the same page.If you wish to Purchase the Bulb, you could consider :- http://www.partstore.com/minisites/projectorLamps/HowToReplaceProjectorLamps.aspx Let me know, if needed further assistance, Hope i helped you. Thanks for using ' Fixya ' and have a nice day!!

You need to hold the help button on the remote control for ten seconds, that should reset the lamp hour. NEC decided to make it inoperable after 2100 hours on the bulb.

u have to reset the lamp timer.

There is an menu entry to do that.

Thomas