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Purple pixel display on screen of projector.

Purple pixels display on screen when presenting, but with different computers and different cords

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SOURCE: patch of purple "scribble" lines on corner of screen

Sounds like the same problem that I just started having. Although my scribble lines are yellow. Personally I'm thinking that one of the three LCD panels has cracked internally and will need to be replaced.

Posted on Oct 03, 2007

  • 1847 Answers

SOURCE: patch of purple "scribble" lines on corner of screen

This is a common problem on a faulty Mainboard of a Projector.

Not much you can do about it except repair or replace the Mainboard

Posted on Aug 01, 2008

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Projector cutting off on right size

This could be because you're running the laptop screen at the same time as the projector and they are different native resolutions.

Use the Fn + F key to toggle the displays so that only the projector gets a signal. Then adjust the laptop display resolution to match the projector's native pixel count,

Sep 02, 2014 | Epson Multimedia Projectors

1 Answer

Y, pb, pr no signal

you need to be sure the computer resolution is 1024 x 768 be sure the projector is set to rgb or vga input signal type.

Dec 21, 2012 | Sharp Notevision Pg-m10s Dlp Projector...

1 Answer

I have a problem with the picture on my Infocus IN1501. It has small squares on it and I see every pixel. How do I remove this?

Generally the screen is full of pixels, and thats a good thing.
It's a problem when you see the pixels that should be off, and don't see them when they should be visible.

So I presume that your pixel problem may be the first type where they appear when they should be hidden.

Now it would be good to know if the bad pixels are all one colour, or if you have chromatic pixelation problems.

Monochrome pixel problems are better than chromatic pixel problems. But alas all pixel problems come back to the DMD or the colour wheel.

Either way your machine is basically compost material for the garbage shredder, unless you want to pay big money to replace the faulty bits.

Ask the local serviceman or servicewoman to give you a quote to look inside the unit and see where the pixels have gone astray.

Mar 17, 2011 | InFocus IN1501 DLP Projector 3000 Lumens...

1 Answer

Hitachi CPS-220 is saying 'RGB is out of range' when connected to PC.

This would indicate that the display settings on the PC are outwith the acceptable range of the projector.
To solve this, right-click on a clear part of your PC desktop and select "Graphics Properties" (in Vista). You then need to adjust the display settings. That is a very old projector which will accept a maximum screen resolution of 1024 x768 pixels. Try changing that 1st. If it doesn't work, keep that screen resolution and also adjust the refresh rate in Hz until you get an image.
The native resolution of that projector is SVGA (800 x 600 pixels).

Feb 14, 2011 | Hitachi CP-S240 Multimedia Projector

1 Answer

Help Screen says No Signal on Input #2

Adjust the screen resolution down a notch or two in the display preferences. The computer is most likely set at 1280x800 pixels at the High (32bit)color. You may even want to drop the 32bit down to Medium (16bit)

Feb 10, 2010 | Sharp Notevision PG-B10S Multimedia...

1 Answer

Projector takes 30-40 min to recognize signal from elmo 110xg

the resolution might not match from presenter to projector. are you using rgb, composite or s-video? the signal might not match. there might be an auto adjust on the projector to read and match the elmo's resolution. if not, the elmo may have an issue sending a powerful enough signal to the projector, and need a new main board.

Apr 07, 2009 | Elmo Projectors ELMO VISUAL PRESENTER,...

1 Answer

Delay/ whitescreen when projecting video from laptop

Connect the external display port on your laptop computer to the projection system, and then turn on the projector. For information about connecting external devices to your laptop, see the documentation for your laptop computer.
Set the display resolution of your laptop computer to match the resolution of the projector system. First, on your laptop, open the Display Properties dialog box by using the Display icon in Control Panel, and click the Settings tab. Then, in Screen resolution area, move the slider to adjust the display resolution of your laptop. If you don't know which setting to choose, try 800 x 600 pixels; this is a common setting for many projector systems. YOURS sounds like 640x840.
If you have audio in your presentation, connect a cable from your laptop's audio output jack to the audio input jack on the projector, and then test the volume by playing a file that contains sound.
Start the Player on your laptop. If you want to only display the Player on the big screen, and not the desktop background, maximize the Player or set it to play your video using the entire screen (full-screen mode).

Jan 08, 2009 | Dell 3300MP Multimedia Projector

1 Answer

Pixelated screen on sanyo plvz2

Hi focushere

This could only be one of two things - either the cable that will need replacement or the Mainboard of the Projector.

Try using a different cable first , in other words a new DVI cable.

If this doesn't fix the problem ( which I'm sure is going to ) you will have to get the Mainboard repaired at a Service Provider.

May 18, 2008 | Sanyo PLV-Z2 Multimedia Projector

4 Answers

Presentation mode is off...

I'm going to guess that you have a wide screen Dell laptop with a 16:10 aspect ratio and a default resolution of 1280X800. The wide screen is great BUT most presentation grade projectors do not have a native (pixel for pixel) 16:10 mode. Instead they still prefer a display input with a 4:3 aspect ratio like your old square CRT or standard definition TV. Why do they prefer a 4:3 input? Mainly because Powerpoint prefers to display a slideshow in a 4:3 mode. Because of this Dell, in their infinite wisdom, created the 'presentation mode' utility in an attempt to automatically convert the VGA output of your laptop from 16:10 to 4:3 on the fly. In my experience this is an annoyance at best and at worst can seriously impact the size and quality of the projected image.

The best thing you can do when you connect to a projector is ignore the presentation mode alert and manually set your laptop's resolution to 1024X768 for an XGA rated projector or 800X600 for an SVGA rated projector. This will cause your desktop to look stretched on your laptop but will give you by far the best projection image.

Jan 16, 2008 | Panasonic PT LC75U Multimedia Projector

2 Answers

Purple pixels in my DP6810 MM projector

you have a bad lcd panel. bad news: you'll have to replace the entire optical engine

Apr 26, 2007 | InFocus Proxima DP6810 Multimedia...

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