Question about NEC MultiSync MT1050 Multimedia Projector

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Nec mt/1040 Hello, I just found you all. I am having a problem w\ nec mt10/40 projector. lamp lights do not hear a fan. the lamp goes out. I downloaded a copy of the service manual w\ schematics but would like any insights that you have regarding if it is not the fan itself. niether the intake or exhaust fan seem to come on. Could it be in the power supply for the fans.I can be reaCHED AT RODNEY.R.BROWN@THOMSON .COMThanks forr your help Rod

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  • Chmed May 11, 2010

    Where online would you download this service manual?

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If your comfortable w/surface mount troubleshooting and soldering, download the service manual from elsewhere online. Part of the troubleshooting tree for this type of problem is to check the surface mount fuses on the underside on the Main PWB (schematic page 1/8). On mine, the 12V surface mount fuse, F3004 (2.3A) was open (quadrant C1 on the schematic). Replaced it, reassembled the projector (3 interlocks don't 'cha know) and it came up just fine.

Doug.

Posted on Dec 10, 2007

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If you have the schematics look on the power supply board circuit. It looks like there is a linear regulator that feeds the fans. My guess is that the regulator is bad or there are broken solder joints in that circuit.

Dave

Posted on Nov 29, 2007

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2 Answers

NEC lt240 lamp light stays off and power light is orange, no Image


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Have a nice day!
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
motherboard, powersupply ... with high quality and competitive price.
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Lampdeng Limited

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I just bought a used NEC Multisync MT 840 projector with just over 600 hours on the lamp counter. I live in Japan. After about 4 or five minutes of working, the projector turns itself off and won't...


hi,
Possible problem is the faulty lamp cooling fan. Check the lamp cooling fan of your projector. if the RPM of fan is low then the lamp can get over heated. May be its has some problem.Do one thing, Remove the fan from the projector. In the fan there will be a specification sticker. Remove the sicker. now u can see a hole in the center. its the bearing part of the fan. put one drop of oil in it. u can use any type of lubricating oil. rotate the fan leafs with finger for some time. after that re-stick the spec sticker. insert the fan in the projector.

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Lamp and user's manual for a NEC Multisynch MT Projector


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1 Answer

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Nec-MT-1075

See page E-55:

76e04b4.jpg

As in the note replacing the lamp automatically clears the lamp hours.

Please take a moment to rate this solution & let us know if the information given was useful to you - Good Luck!

Informatica

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2 Answers

Changing the lamp


There is a small cover plate, about 3"X6", that 'just' snaps off. You might have to use a small screw driver to pry it open. The bulb can then be pulled out. Align the new bulb and press it down into the socket. Be careful not to touch the bulb with your hands; use gloves or a lint free cloth.

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