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Why is my Projector Green? 4 Things To Check

Why is my Projector Green? 4 Things To Check

When you purchase a projector, you should be ready to handle the problems that may emanate as time goes on.

No projector is perfect in itself, and because it is a technical device it is prone to developing faults.

One of the problems that may arise is that the projector starts to show green. There are several reasons for this.

Some of these causes can be rectified by performing simple repair actions on your projector, others require the service of a professional.

This article is for you if you are currently facing this problem with your projector, or you just want to learn about it in case of future occurrence.

Note that the causes discussed in this article are a few out of many other causes. If none of this is the reason for the green tint on the image, then you should call the customer care service of your projector’s brand.

Why is my projector green?

There are various reasons why your projector is showing green. In this article, we will be looking at some of these reasons.

It is one thing to know the problem, it is another thing to find a solution to it. Not only will you be shown the problem, but you will also be given the solution.

So, let’s get to it.

What can make your show green?

1. The cables are not well connected

connect HDMI cable to a device

It is possible for your projector to start displaying green all of a sudden. Most times, the projector works fine for a while before it turns green.

The fault may not necessarily be from the projector itself. Before you open up the projector to start checking the components, make sure that the cables are well connected.

If the cables are well connected, then the problem is not from there. You can proceed to test the projector with other devices. This will enable you to determine if the problem is from the connected devices, or from your projector.

2. The VGA cord is bad

a vga cable

This is another cable problem that can cause green tints on the projected image. It is a common occurrence with VGA cords, especially the ones used for portable projectors.

When these cords are bad, they get bent and loosened at the plug. This affects the connections and it may result in green tints on the image.

It is better to replace the cords with new ones. However, if you cannot get new cords, you can probably play with the cord near one of the plugs. Twist the cord in a way that it can reconnect properly and go back to a normal display.

Although this method is effective, getting a new VGA cord is preferable. Why not save yourself the stress?

3. The projector is not set to the correct input signal setting

configure screen

It is possible for your projector to show green if it is not on the correct input signal setting. This is common if you project images from a DVD player. All you need to do is to change the input signal setting to Auto or component.

The Auto setup optimizes the projector’s image quality. Normally, a projector can detect the input signal settings automatically. However, if you need to change the settings, you can use the Signal menu.

Also, check the input mode, the problem may be from there. For example, when an LCD projector is connected to a PlayStation 3 via component inputs, it displays green. However, when you change the color mode to RGB the color returns to normal.

4. The tri-colored disk is stuck at color green

projector inside components

Your projector may be stuck in the green part of the color wheel. This is another possible reason why your projector is showing green.

This color wheel in a projector was designed to improve the idea of black-and-white in a one-chip DLP projector. This color wheel is common to the old models of some projectors.

A DLP chip in a projector is like a mirror that reflects light through the projector lens. Since the chip works based on black and white only, the projector was upgraded to show colored images also.

The color wheel rotates and gives the colors red, blue, and green at intervals. The wheel works hand-in-hand with the DLP chip. Whichever color is rotated, the DLP chip projects that color of light on the screen.

In the case where your projector shows only the green color, it is possible that the color wheel has rotated the green color and is stuck. At this point, it is unable to show any other color except the color green.

Other colors are not displayed, and your projector gives a green color for all images.

To solve this problem, you will need to open up the projector. This way, you can see what is preventing the color wheel from rotating, then set things right. Be careful when opening the projector so you don’t damage some of its components.

If the color wheel has gone bad, it is advisable that you replace it. This will save you from any future troubles with the color wheel.

Once the color wheel starts rotating, the green color will leave the screen, and your projector will start working properly.

How to solve flickering screen problem and green tint on Optoma HD20 projector?

The video below shows how to perform internal cleaning on your projector.

This method is effective for solving flickering screen problems, and also to remove the green tint that is showing on your projector.

Optoma Projector HD20 (green and flickering) internal cleaning


It can be frustrating when your projector becomes faulty. It is even worse if you have no idea how to solve the problem. Check out the different causes and solutions discussed in this article.

It is vital that you access the projector before you open it up. Do not conclude that the problem is internal if you have not accessed the external components. It is risky to open up the projector unnecessarily when the issue is with the cords.

If it is a cord problem, replace the cord with a new one. However, if the issue requires that you open up the projector, do so; but be mindful of the internal components of the projector especially if this is your first time doing so.

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