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Testing a Projector Lamp

When attempting to test a projector bulb, it is important to know certain facts and to realize that projector lamps are complex and function differently than any of your other household or traditional electronics.

1. Each projector lamp contains a ballast system that ignites the lamp with a higher voltage in the ignition phase. Once the lamp is lit and the circuit has been established, the ballast shifts the electrical current to a running voltage.

2. Projector lamps CANNOT be tested with an AMP or OHM meter. Projector bulbs function by igniting ultra-high pressurize mercury vapor contained inside an ARC tube. There is no conductive electrical material contained in the ARC tube besides the gas. Therefore testing an unlit projector lamp with an AMP or OHM will not work.

It is impossible to test your projector bulb with typical household electrical equipment. To test projector lamps, you must buy specific testing equipment; for more information about projector lamp testing devices, please contact Philips