Question about BenQ (200NSH-LAMP) Projector Lamp for PB6100, PB620

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Clean light engine

Dark spots in image appears to be dirt inside the light engine

Posted by jefferey_bur on

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1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.I supply the DMD chip and the price is USD200
any questions, feel free to contact me
We supply original projector lamp,bulb,accessories,Lcd panel,Lens,DMD chip,color wheel,motherboard,powersupply,ballast... with high quality and competitive price.
have a nice day!
Jerry,Lampdeng Limited

Posted on Mar 21, 2014

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3 Answers

My panasonic Lumix DMC-ZX1 shows 3 dark spots and 2 hairs on all pictures. When I zoom-in the dirt is more visible and when I zoom-uit I dont see the hairs any more and the dark spots appear wider and...


Yes, you can clean. Not as complex as I originally thought.
1) Remove all of the silver screws
2) Separate the silver case (should split in 2)
3) Remove the 3 black screws in the middle
4) remove the center square cover that is over the lens
5) Use a duster spray to clean the lense and mirror
6) Reassemble in reverse order
Not knowing what I was going to get in, the entire process only took about 7-10 minutes.

Email me at [email protected] with any questions.

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2 Answers

How do I get rid of tiny spots that are appearing on my images?


Dark spots are usually the result of dust or dirt on the lens. If a simple soft bristle brush (1/8" wide paint brush is ideal) can't dislodge the debris, you should purchase a lens cleaning kit available from camera stores. They run about $10. These are great to removing these and other contaminants such as finger prints, smudges, etc. High end lenses have special optical coatings and the special cleaning fluid included won't leave a residue - or damage the coatings.

If the spots are bright or colored, (or dark after cleaning above) the electronic sensor inside the camera has a "hot" or "stuck" pixel. This problem is usually not worth fixing due to cost.

I hope this helps - and good luck!

Jun 07, 2010 | Gateway DC-T50 Digital Camera

1 Answer

There appear to be dark spots on inside of screen


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. You can find it here: http://www.discount-merchant.com/SONY-1-788-155-11-p/1178140.htm?Click=48173 Have a blessed one!

Apr 12, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

A mark or dark spot is appearing on all images


That's quite a spot! Yes, I believe it is on your sensor. It could be one of the following: dirt, a spot from moisture condensing on the sensor after bringing a cold camera into a warm house, or mold. It can be cleaned but I imagine it will be expensive since the camera will have to be disassembled. I don't know how much you paid for it or how long you've owned it, but if the cost will be too high, it might be time to think about a new camera. Or, you could live with it and use Photoshop Elements to remove the spot on photos you want to show off to friends.

Jan 07, 2010 | Fuji FinePix E900 Zoom Digital Camera

1 Answer

Canon power shot sd1000 black dot on lens


If by saying the upper right corner of the lens you really mean that there is a dark spot on each image AND the rear display, there may be dirt or dust on the lens itself. Clean the lens with an optical quality cleaner. Do not use paper towels and Windex or the like - as paper towels can scratch the lens.

It is also possible that the dark spot is a "stuck pixel" on the image sensor inside the camera. There is no way to repair a stuck pixel outside of replacing the sensor. Any dark spot (regardless of source) can be edited out by using image editing software. This will allow you to to make the dark spot less noticeable - or practically invisible.

If the dark spot is on the rear display only, it can also be a result of a "stuck pixel" on the display itself. This should not show up an images, but only on the display. There is little that can be done outside of replacing the entire rear screen.

There are other things that can cause these problems, but those listed above are the most common.

I hope this was Very Helpful and good luck!


Nov 20, 2009 | Canon PowerShot SD1000 Digital Camera

1 Answer

Dark spot issue.


Its an acrylic condensing lens inside the light engine that has melted/warped. You have to pullout the entire light engine then disassemble the optical light tunnel to get too the lens. Then you need a lens-smith to cut a new lens because Infocus won't stand behind this design flaw. Its really a shame on Infocus!

If you need more info contact us here: click here

Sep 19, 2009 | InFocus ScreenPlay 61" Rear Projection...

1 Answer

Dark circular spot on Ricoh R6 screen and images


There is a spec of dirt that made it inside the camera and has landed itself on your image sensor.

If you take a picture and the image has a spot on it, it could be the screen. If you transfer it to your computer and the spot is in the same spot, its something on the image sensor. You would have to send it out for cleaning, and a new camera would be cheaper.


Mar 30, 2009 | Ricoh Caplio R6 Digital Camera

1 Answer

Best cleaning method for projector bulbs on samsung will glass cleaner do any harm?


Do not by any means clean the glass on a bulb or leave a finger print on it. If you dropped a new lamp in the dirt, blow it off with canned air. No amount of dust on the lamp will affect the image. Its most likely burn from usage.

If there is a dark spot in your image it is caused by a discolored reflector, dirt inside the optical path, faulty LCD.

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1 Answer

Background ghost like images


CHECK IT IN THE DIFFERENT ASPECT MODES. IF THE IMAGE STAYS IN THE SAME PLACE REGARDLESS OF ASPECT. THEN YOU HAVE A LCD PANEL PROBLEM. PANEL WILL HAVE TO BE REPLACED.

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2 Answers

Spots on the screen


Your problem could be dust or dirt on the lens inside the reflection cavity or the problem could be the light engine. If the problem is the light engine, thank god you have an extended warranty as the light engine alone cost somewhere around 1000 buck. Good Luck.

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