Question about Sharp XR50SL: Notevision XR-50S Multimedia Projector

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White spots on screen how do I clean lens - Sharp XR50SL: Notevision XR-50S Multimedia Projector

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With water only

Posted on May 17, 2014

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I have an Acer K11 projector and there are a whole lot of white spots on the bottom right of the screen that looks like dust on the lens but it is not as I have cleaned the lens . Any advice ?


This is a DLP projector, the white spots are likely bad pixels and the DMD chip will need to be replaced. Will run you around $150 or so.

Sep 22, 2016 | Acer K11 Projector

2 Answers

Lots of white spots on screen, how to clean lense


This is a dlp projector and has a bad DMD chip. Most models are very similar. Here is a video of a similar repair.

Feb 02, 2014 | Acer P5271 DLP Proj Uxga 30001 3100 Lumens...

1 Answer

On screen will appear white spots.


Clean the lens inside and out (but do not disassemble the lens assembly), and clean the internal LCD panel.
If this doesn't help, then the LCD may have defective pixels.

Jun 18, 2011 | ViewSonic PJ402D DLP Projector

2 Answers

Hi there my benq dlp projector is showing white spots on the screen when the screen is black can you help me?


This is caused by dust on the lens assembly. If you can remove the lens, clean the surfaces with a lens cloth. That should resolve the problem. It is possible that the there is dust in the optical pathway inside the unit as well. If the cleaning of the lens does not resolve the problem, the unit should be brought in for a professional cleaning. It is not suggested that anyone open up these units as there are fine adjustments that can be changed internally easily that could result in convergence problems.

Dan

Jan 29, 2010 | BenQ PB6100 Multimedia Projector

1 Answer

White cloudy spots on my images - a recent problem


If these are like "bubble" spots and they appear in different places on each photo, I'm guessing you're shooting flash pictures indoors. The spots are dust particles in the air reflecting the flash. This happens on small point-and -shoots because the flash is almost in the same plane as the lens.

Nov 10, 2009 | Canon PowerShot SD780 IS / IXUS 100 IS...

1 Answer

White and black lines and spots on camera screen.


it may be dust has accumulated or a wipe mark remains on the lens.

Try cleaning it with a dry cloth.

May 10, 2009 | Fuji FinePix Digital Camera

1 Answer

White spots on photos


No setting can cause white spots on the picture, this is a fault.

By the way you can reset settings on this camera to initial state by simply removing and putting back camera batteries.
Alternatively you should have a reset command on camera settings menu.

My opinion is that this is a fault and not a settings problem.

Typically there are three kind of faults that can cause this problem:

1 - Dirty lens or water inside the lens:
The lens may be dirty inside, for example because of water condensation on internal surfaces, this will cause blurred dots or black dots. The lens must be taken apart and cleaned in this case.

2 - Defective CCD sensor.
The CCD sensor is the chip that detects the picture, if you get well defined white or colored spots on picture that is probably a defective CCD. I think this is the more likely in your case. To fix this the sensor must be replaced.

3 - Defective video chip on internal board.
This can cause any kind of problems, however it is quite unlikely.
It is an expensive repair.

Feb 09, 2009 | Sony DSC-T70 Digital Camera

2 Answers

White spot on photo


Hi and welcome to FixYa,

Initially, this would be a temperature imbalance on the CCD lens. Often white spot(s) appear at night or when the temperature is cold. Workaround is to open the lens but delay taking a picture after a few seconds. The idea is allow the lens to match the ambient temperature.

Good luck and Thank you for using FixYa.

Jan 09, 2009 | HP Photosmart 315 Digital Camera

1 Answer

White Spot


If this white spot is always exactly the same, but moves off the picture when you start to digital zoom and not optical zoom, there is probably something on the sensor. You mentioned that when zooming, eventually it moves. Are you in digital zoom mode at that time? (The switchover from optical to digital zoom is automatic, but you can disable it). Is this white spot blurry or sharp? Can you see fringes of the image at the edges? (This would suggest something on the lens).
If there is a piece of dust inside the lens ,you may be able to see it looking down the lens. How big is this spot?
Either way, if the camera is new, can you still return it?

May 28, 2008 | JVC GR-D244 DV Digital Camcorder

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