Troubleshooting Video Issues Lesson 002: Projector Issues

Projector

Special type of display used in large environments to share and image across an entire room.

What is something that a tech needs to do when troubleshooting a permanently installed projector?

Examine all cabling from a physical standpoint to ensure proper functionality.

What are the issues outside of physical cabling issues when it comes to support concerning projectors in a classroom or office setting?

Dim images, no images, and shut down or restart with no warning.

Dim Images

When an image looks washed or is hard to see.

What does EOL stand for?

End of life.

What usually causes dim images in a projector?

Due to the bulb approaching EOL.

What will happen if a dim projector bulb is not replaced?

The bulb will fail.

No Images

When the projector bulb fails, no light is produced, preventing the image form displaying.

What usually causes no images in a projector?

A burned-out bulb.

How are projector bulbs rated?

By the amount of hours it will last.

What is the average lifespan of a projector bulb?

~500-2000 hours.

What is one of the factos to consider when purchasing a projector?

What bulbs are able to be used with that projector and how long said bulbs will last.

What does a projector keep track of when it comes to projector bulbes?

How many hours the bulb has been used.

On average, how many hours of use can a user get out of a bulb that has started to dim?

~50-100 hours.

What must be used when handling a projector bulb?

Gloves, to protect the bulb.

Why should protection be worn when handling projector bulbs?

Many projector bulbs are sensitive to the oils in skin.

What can happen if a projector bulb isn’t properly installed?

Premature EOL.

What should a tech do prior to replacing or installing a projector bulb?

Turn off the projector and allow it to cool down for 15-30 minutes.

What causes a projector to shut down or restart on its own?

Overheating.

What commonly causes a projector to overheat?

Lack of cleaning and maintenance of vents and cooling fans.

What is a common reason for a projector to shut down or restart outside of improper cooling?

No source input detected.

What happens when a projector doesn’t detect a source input?

Will shutdown after a set period of time.