Question about Mitsubishi XL1XU Multimedia Projector

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Mitsubishi XL1XU Projector

The projector has been sent for repair several times now. The latest problem was with the ballast to correct the lamp ignition. How often does this occur in these projectors and is this a common one for other projectors as well? Is there an explanation of this problem and what causes it?

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Hi there

The most common cause for a Ballast to go faulty is power failures & power spikes and off course lightning.

I normally advise my clients to hook up a UPS to the Projector just to make the power supplied to the Projector more even and smooth.

Ballast problems however occurs more than often on any model of Mitsubishi I have found.

Posted on Mar 27, 2008

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It is not a common problem. Ballasts rarely need repairs. Have you reset the lamp hours to zero after installing new bulb? If, yes to confirm about ballast please ask the TV repair shop man whether previously he had repaired any DLP projector. There is lot of difference in technology of DLP projector & TV (except DLP Projection TV). The problem could be in the projector main board. The lamp lights after getting Lamp ON signal from the projector main board. As the lamp ignites the ballast sends the signal of Lamp Lit. If the projector board senses that any blower/exhaust fan or colour wheel is not running then it will send a signal to Switch OFF the lamp. If you are tech-savvy then do as follows to check about lamp & ballast. Remove 5 pin connector from the projector. Connect projector to mains supply. Get a 5V DC power supply. Connect +ve to pin 3 & -ve to pin 4 of the ballast connector from this supply. The lamp should light. If it does not light then there is problem in the ballast (if the lamp is new). To give a chance you can check it for your lamp which lasted 20 minutes. Generally ballasts are made by OSRAM. You can get the ballast from OSRAM dealer. You will need the part number for that. Take out the ballast, it is there on it.

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Hi maxima_90

The only other thing that could cause this once the lamp has been replaced is the Ballast ( lamp's powersupply )

If I could give you a tip , rather replace this part than repairing it , as I have found that the problem comes back most of the time on a repaired Ballast.

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Hi there

Did you check that your lamp hours were actually reset ?

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