Let s assume that you own a projector that says that its lamp is to be replaced.
What is a projector lamp ballast.
If this is all ok then it most likely you have a problem with your lamp ballast unit or the lamp itself.
As the lamp ages with use increasing levels of stress are placed on the ballast lamp driver every time the projector is turned on.
An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit.
Dell 1210s projector lamp ballast guarantee 60 days replacement.
Many manufacturers share common components which means purchasing lamps for your sanyo projector from eiki is a totally acceptable practice as sanyo is no longer in the projector business.
Over time a fault develops in the ballast where it cannot properly hold the current once the mercury vapor in the lamp has ignited after a high voltage strike.
Once the lamp is lit and the circuit has been established the ballast shifts the electrical current to a running voltage.
Projector problem 5 projector on but no image if you can get your projector to turn on but then get no image make sure that the cables that you are connecting with are connected correctly.
A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube which would otherwise rise to a destructive level due to the negative differential resistance of the tube s voltage current characteristic.
Projector lamps cannot be tested with an amp or ohm meter.
1 the lamp really doesn t work because the electrodes are damaged or there was a leak and the gas inside the lamp has mixed with air or the lamp has blown.
Projector bulbs function by igniting ultra high.
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These are the real reasons and of course one has to put some light source instead of the one that got damaged.
However the projector does have an achilles heel.
There can be two reasons for lamp replacement.
Each projector lamp contains a ballast system that ignites the lamp with a higher voltage in the ignition phase.
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The oem bulb subsequently caused over 1500 worth of damage to the projector as we needed to replace the ballast as well as the lamp.
Ballast a device required by electric discharge light sources such as fluorescent or hid lamps to regulate voltage and current supplied to the lamp during start and throughout operation.