Question about Dell 1800MP Projector

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Turns on and both the lamp and temp button light up but no bulb will turn on. Internet soruces say a bad capacitor.

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Hello
Check the bulb first. If it is found OK, the inverter card has the fault. You have to contact Dell Authorised Service center to get this card. OK

Posted on Jan 12, 2012

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Posted on Jan 02, 2017

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Sanyo pro xtrax projector


Lamp LED should be lit when the projector is in Standby. However, the problem you are describing sounds like one of two issues. Either the lamp is bad and needs replaced, or there is a power supply fault. If you have tried replacing the lamp already, make sure you reset the lamp counter or the projector may still not function properly.

does the temp warning light come on when the projector shuts off? if so you may also try cleaning the air vent filters and ensure there is proper air flow around the projector. if that checks out then have the projector serviced as the power supply is likely suspect.

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I have a Benq w710st DLP projector and when i turn the power on after a minute it turns off. The power button turns off and both the lamp and temp lights turn red. How do I fix this and can I do it my


New bulb is probalbly needed. You need to find out what zero means on that projector. The real problem is finding out why the cooling fan is not turning on. This is probably the reason that the temp light is coming on.

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Samsung model hlt4675sx\xaa projection tv wont work. the stand by/temp light flashes red and the lamp light flashes green? it makes the sound that it makes when it turns on but no picture. we looked at the...


It could be the temp sensor going bad. This sensor sits on top of the metal housing which the bulb assembly slides into. The bulb assembly will have a hole on top and this is where the sensor is above. There is a small blue and white wire that plugs into it. If you pull the wire out and put a paper clip or wire in the coupling you will basically bypass the sensor connecting the blue and white wire. If your tv turns on then that is your problem. Its cheap too. Here were my symptoms..1] Turn tv on 2] Bulb would light up..(which eliminates the ballast) regular picture would show up (which eliminates the bulb and color wheel) 3] 30 seconds later tv would shut down with 3 flashing lights. After bypass the tv turned on as always and hasnt shut down yet. Always un plug tv first. Get the replacement part to avoid overheating and possible fire

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Three blinking lights indicates a lamp problem.  This can be from A) a bad lamp, B) bad ballast C) bad Light Engine/DMD Board.  Try replacing the bulb first.  As with any lamps, it has a limited life.  If that doesn't work, you can try the ballast next.  If that doesn't work, it's time to take it in to a certified repair center for diagnostics.  Here is a page from the service manual on the three blinking lights.

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1 Answer

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Can I ask where you got the capacitor kit from?

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I fixed the exact same problem on my PB6200. Both back fans were not working, and the bulb would not turn on.

In my projector, the fan board had a bad capacitor. The fan board is the one where all 3 fans are connected, and which is facing upside down on top of the powerboard. The bad capacitor on my projector was coded C7302 on the schematics. It's a brown, 25v 470uf capacitor.

I recommend you to open your projector, unplug all connections to the fan board, turn it upside, and inspect the capacitors and other components. Bad capacitors have a bulge and/or a black stain or fluid coming out on the top. You can find pictures on the net.

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Your lamp might be bad. Also, it is possible that the lamp door is not closed.

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