Dear Expert, Our company has a Compaq MP2800 Microportable Projector which is not working properly. When you turn it on, it works properly for a short time and then automatically shuts off and powers down. If you try to re-start it, the same things happens, where it starts up fine, and then after a short time, automatically shuts off and powers down. Why is our projector doing this? What do we need to do to repair the projector so it works properly? Thanks for your help. Gordon Busenbark Xytis, Inc. 949 725 3700 Ext.18 firstname.lastname@example.org
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Re: Compaq MP2800 Microportable Projector
If it is detecting a power surge it may shut down. Does it seem abnormally hotter than usual or is any specific part hot? Has it been cleaned at all, dust tends to collect and could disrupt it, try blowing it out with a little compressed air,
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Are there any lights blinking?
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If the projector is not getting a source it might go on standby maybe check where you plug it in.
Projectors require quite a bit of power and should be on a single loop/outlet not hooked up to a powerbar with more things on it.
This could be one of 2 things. It could have a bad color wheel or there is a setting problem in the unit. If the video mode is not set correctly like NTS or PAL it can give a black and white image.
The other could be your color wheel has failed. Did the unit make any noises before the color went out?
Some times the color wheels will make noises when the age before they crack or break from the heat.
I believen you can pull the lamp out and with the lamp out try and power the unit up, look into the little hole the lamp shines into and see the color wheel spinning. when you first plug it in and unplug it the wheel should spin and you should see the colors change. DONT TOUCH THE COLOR WHEEL they are fragile and can break easy. Some get more brittle over time from the heat of the lamp.
1:Remove the lamp from the projector. Ensure that it has no cracks, discoloration or "smoky" appearance.
2:Try removing and reseating the lamp, or to try another lamp.
3:Reset your lamp timer. Most projectors have no way of knowing if you physically have replaced your lamp or moved it out . They rely on the user resetting the lamp timer
4:Pull the lamp back out of the unit, give is a brisk shake and reseat the lamp. Occasionally there is some buildup on the lamp contacts or filament during manufacturing.
5:Are the input and output vents blocked or obstructed in any way? That could cause overheating problem and what you see with your projector is one of it's symptoms .
6:Are the filters dirty or clogged? Most manufacturers will recommend filter cleaning on a monthly basis depending on usage .After cleaning the filter always remember to reset your projector .
7:Remove any extension cords, power strips and/or surge suppressors. Many current model projectors will not even try to ignite the lamp if they detect drops or fluctuation in voltage supplied to the unit. This is a safety feature to reduce stress on the lamp.
I had the same problem!
The problem is dust on the color wheel. At side of the color wheel is a wire connector attached wit one small screw, with a cottom tip clean the small lens and surface, that's all.
Put the connector and screw and it will OK!!