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Projector, clean dust off of main board
This should probably only be done if your warranty is
expired. Dissembling a Dell Projector will void any existing warranty.
Personally I had nothing to lose, the projector wouldn't work and Dell wouldn't help me so I had a $1500 pile of plastic with no good use.
Personally I had nothing to lose, the projector wouldn't work and Dell wouldn't help me so I had a $1500 pile of plastic with no good use.
If your projector is flickering, the picture is jumping up down left and right, then it shuts down and the lamp light comes on, it is not the lamp! Don't let anyone tell you otherwise! Well, at least try this first. For some reason dust on the main board causes this, sounds ridiculous but it's true. I have a 3200MP
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ADMIN NOTE:
Broken link has been removed from this post by Dell>
and just did this two hours ago and the projector is as good as new.
and just did this two hours ago and the projector is as good as new.
For a 3200MP projector =
* Take the projector to a work room. This will get messy
* There are four very small Phillips screws on the bottom of the projector. Remove those
* There is one very small Phillips screw on the right hand side of the projector if you are looking at the projector from the front. Remove it
* Now flip the projector so it is right side up
* Remove the top piece of plastic. The bottom does not come off. Be careful. There is a ribbon attached to the top, so lean it against something while disassembled
* Use compressed air can and blow the dust out of the unit
* Take the lamp out and clean the glass lens
* Reassemble the projector
fett19
35 Posts
0
February 15th, 2006 15:00
fett19
35 Posts
0
February 15th, 2006 15:00
adidalax
1 Message
0
March 3rd, 2006 05:00
joe707
1 Message
0
March 20th, 2006 02:00
Great Advice! Saved me big bucks on new lamp!!!!
Easy to follow instructions. I wished I took pictures. Thanks for the advice!
tyarch
1 Message
0
April 1st, 2006 02:00
This is great advice, I was on my second projector, the first one I sent back for this problem, the same problem started with the second projector. My warranty was up, so I was about to send out to be fixed.
I followed these instructions and now the projector is working great again, and has been for over a month. All I can say is thank-you, you saved me a lot of time and money. Dell should post this some where.
dehartauto
4 Posts
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April 14th, 2006 23:00
tomofwisc
1 Message
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May 3rd, 2006 20:00
mbrang00
1 Message
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May 12th, 2006 02:00
I dont have a Dell projector but I did buy mine from Dell...I have a Viewsonic PJ755D that started to flicker. As I said...I’m new into the projector world so I was not sure of what to expect when the bulb went out. I was beginning to think it was the bulb because when I put in into "Econo-Mode" it got worse...
I did a little searching on Google and your post was like the 3rd or 4th hit. I did what you said and pulled it apart, (a little different than that of your model). As I was taking it apart I noticed that there was not a whole lot of dust build up ( I was beginning to think that this was going to be a futile attempt). I took the bulb out and pulled the top off to expose all of the electronics. Then I took it out to the shed to blow it out with the air compressor. I took the compressor to the control boards fans...everything that i could blow 90psi air too. Put it all back together and now it works like a charm....
For anyone who is reading this and owns a PJ755D here are a few things to look out for while doing this. Well Ill just write instructions:
1-Turn off the unit and allow the unit to finish its two minute cool-down, additionally, allow the unit to cool for another 25-30 min before doing the following...trust me.
2- Remove the small panel to expose the bulb assy, loosen the three Phillips screws and carefully pull the bulb assy out.(The three screws are captive and will not come off)
3-Place the Bulb on a tall shelf (away from Childs reach) about 10-15 feet away. This will keep you from accidentally knocking it off and destroying a 400-500 dollar light.
4-Using a long #1 Phillips, remove the 5 or six silver screws on the bottom of the unit. Watch out for the one right in the center, I missed that one at first.
5-After removing the screws (and placing them in a safe location) flip the unit back over so it is now sitting on its feet. Using only your fingernails the top should come off with little resistance. WARNING- there are two cables attached to the under side of the lid, be carfull not to rip them.
6- With the lid propped up on a book or something remove the ribbon cable by flipping the small brown lever up. The ribbon should come right out. (Mind you the contact pins on the ribbon are facing down; this will come in handy when putting it back together). The other cable is a (white) plastic connector like those found on sound cards in a computer. To remove just pull it out using your fingernails---Don’t pull by the wires....
7- BLOW BLOW BLOW...if your going to use an air compressor, be careful not to touch any of the "microchips" on the circuit board,(the electrostatic discharge caused by the moving air could destroy the chip and render the unit useless). Make no physical contact with any of the components on the circuit boards.
8- Flip the unit over and make sure you have blown out all of the dust from the inlet and the exhaust. The dust is evil...get all that you can because it apparently doesn’t take much at all to screw things up.
9- All done, Put everything back together, don’t forget about the two cables to hook up. Remember, the ribbon cable pins/contacts face down. The brown lever needs to be up while inserting the ribbon and is used as a clamp to secure the ribbon once it is in place.
10-Go get your bulb that is on top of the fridge or wherever you put it. plug it all back in and hopefully it worked for you too.
I hope this helps someone, it did me. Please if this takes care of your problem make a post to say so. I didn’t have a login for these forums before today. It took 2 min to sign up. Id likes to hear from you....
Mike
Message Edited by mbrang00 on 05-11-200610:24 PM
lz0715
1 Message
0
May 12th, 2006 14:00
OT2
2 Posts
0
May 15th, 2006 23:00
OT2
2 Posts
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May 15th, 2006 23:00
drob76
15 Posts
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July 3rd, 2006 03:00
Coach-Rev
8 Posts
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July 24th, 2006 15:00
jimcalton
2 Posts
0
July 24th, 2006 22:00
My Dell 2200Mp is a little over 2 years. I recently started to get a dark bar diagonal across the upper right of the screen. I figured it was the bulb. I paid for a new bulb-ouch!
I've replaced the bulb. Now, the dark spot has gotten worse. It is more geometric. It has right angles and covers 3/4 of the viewing area. Some times, if I tap on the projector, the shadow moves. I have looked at everything-minus taking the projector apart.
I did not wish to take the projector apart. But, I have pulled it apart and blew compressed air. I've dusted this entire machine. Although it needed dusting, that didn't solve the problem. Is there something else I need to do? I have replaced the bulb, by following the online directions. I have cleaned the lense that is accessible beneath the bulb. What else?
bLOODbAT
7 Posts
0
September 17th, 2006 22:00
The final time, general dusting would not solve the problem, and the projector would shut down without fail after being on only a few minutes.
I decided to try and find out if there was a common problem with this projector model and phoned up some projector repair companies. One company told me that there are several reasons for the lamp light comming on - basically the light really means that the projector had to shut down due to a fault - which could be a number of things. Problems can range from a faulty fan to a faulty main board.
Anyway - to keep things short, I discovered exactly what was causing my projector to flicker and shut off - DUST IN THE COLOUR WHEEL SENSOR. If you open up your projector as described originally and have the lens facing you, the colour wheel is just to the left where the lamp goes. To clean the sensor, 1st remove the screw holding the small green circuit board. With it detached, you will easily see the sensor, and probably some dust/dirt. remove the offending dust, and wipe it clean. Also, if you spin the colour wheel carefully, you will see a black tape section. Wipe round where this tape is - the sensor picks up the black tape to sync which is used to sync the colours projected by the dlp chip.
Hope this is of some help to someone.