If your projector has dead pixels, you should find the main cause of this problem. Here are 17 real facts about the causes and methods to fix black and white dead pixels on a projector.
Can a Projector Have Dead Pixels? All projectors can have dead pixels at some point; there are various reasons which cause these black and white spots. They appear on the lens or the screen of the projector. There is no specific count of these dead patches, but they are numerous.
Can a Projector Have Dead Pixels?
Dead pixels in a projector can make the image blur, and it is not better for the viewer and user as well. The dead pixels are of two types one is black spots, and the other is white spots. Both can damage the lens and screen of the projector.
Types of dead pixels
Black spots
These appear on the projector due to the external or internal problem of the projector. The surface gets dusty and dirty, and it brings black dead spots. They are tiny in their shape and appearance.
Some of them are easily removable by just rubbing the screen with a soft cloth, but few are permanent. They require expert and technical help for removal.
It becomes very frustrating when the image appears with patches while watching a film or any other thing on the screen. These small spots bring a big difference to the clarity of the cloud images.
White dead pixels
The white dead pixels on a projector screen are a common but dangerous problem. These are so tiny, and they spread all over the surface.
It seems like a sky surface with an enormous number of stars on it. It usually occurs due to a non-functioning chip.
It contains the micromirrors which protect the screen from these bad spots. The damage and directly affects the screen of the device. The image becomes blur and unclear.
What causes dead pixels in a projector?
Here are the main reasons that can cause dead pixels:
Dirt and dust
Dirt and dust cause the appearance of black spots on the projector’s screen, and they vary in size. They occur on the internal or external side of the device and its lens. This is a must if you want a projector to work on glass.
The presence of both types of dead pixels is a much technical issue than having only one of them. People consider them as dust particles, but they are many giants.
They are of different shapes and sizes, and most of them are broken patches of the original image. The exact cause for their presence is still unknown, but the internal hotness damages the device.
The chips and diode screen damages, and it results in the breakdown of the image. Remove them permanently by taking some professional help.
Sudden scratch
The scratches on the light-emitting screen and the rear focus area are harmful. They immediately make permanent lines on the surfaces. The scratches make the image controversial, and it appears to blur and confusing.
The sight breaks into small pieces that are black or white. They start moving towards the whole area, and ultimately, they make a cloud.
The only solution is to save the device from all types of scratches and patches. Wear gloves during the use of a projecting device. Fingers create small spots on the lens, but nails make permanent marks.
Excessive heat
Never allow the projector to catch so much heat that touching it becomes impossible. The excessive amount of heat starts damaging the internal body of the device.
Allow its ventilation every now and often, mostly when it is working for more than three hours. The heat burns the images and surface of the LCD, and the device stops working.
It breaks the internal thermometer, and it does not shut down. The dark black spots appear on the screens that are almost impossible to remove.
The heat increases to a level that fans inside the device stop working or the power becomes insufficient to cool the device. These spots are hard to detect because they lead the focus on the burning and other happenings.
Broken chips
Spin projectors have chips insides them, and they can display black and white color by spinning. The heat and other factors affect the spinning property of these chips, and ultimately they stop moving.
The display lacks the distribution of white, black, and new colors. The whole image becomes distorted, and the micromirrors get involve in the procedure. They bring the display in low quality but try to keep the image on the surface of the light-emitting screen.
Black spots appear on the area and spread all over. The heating of the system promotes their number, and they break the whole image. The problem is not an easy fix, and it requires expert help to get rid of this problem to make a 1080p projector to run 4k.
Faulty drivers
Multiple drivers help in the proper functioning of the device and its display. They stop working slowly, and it starts damaging the image by black and white spots.
They spread all over the lens, and it seems like a sky filled with stars. The picture loses its quality, and drivers become rusty. This problem originates with no cleaning routine of the structure from inside.
The fan brings the external dirt inside the drivers, and it stays there for a certain period. The accumulation causes the appearance of the dead spots on the edges, and they prevail.
Heating adds up to this destruction, and the solution is the replacement of the faulty drivers with new ones.
Marks on the lens
The marks and small patches on the lens of a projector lead to the appearance of black and white dead pixels. The whole image breaks into shattered pieces, and it becomes hard to recognize the picture and documents.
Overpower increases the quantity of these bad spots with a ratio often. The whole lens gets cover by them, and it needs repair. Take expert opinion in such cases because the lens is a sensitive part.
Replacement of a lens with a new one is a costly thing, but it is only a solution to this problem. Use precautionary measures and keep your hands and fingers away from the tiny thing.
Inappropriate settings
The device connects continuously with other essentials like television and other multimedia devices. All of them have an impact on the projector, and they have appropriate settings.
The improper settings or an abnormal setting leads to the orientation of the bad spots on the screen. The lens also gets the effect, but the screen destroys the display quality.
The changes in the general settings can bring difference, and it suffers. Always use precautions while clicking any option in the setting area, and sometimes, the consequences are irreversible.
Manufacturing faults
Some electronic devices have their manufacturing faults; they do not come with proper settings from the company. These devices work accurately and with quality for some days, and then they start dis-functioning.
The dead spots begin with one or two in number, but ultimately they cover the whole LCD. The device loses picture quality and display. The professionals help the projectors to find out the faults, and the only solution is to replace it with a good one.
Failure of pixels
The pixels work in synchronization with the input signals, but sometimes the heat invades the pixels. They lose their power to provide excellent picture quality in all dimensions.
The white and black bad patches cover the whole light. Mixing of colors and blur appearance become usual for such tools. Excessive heat suffocates the full structure, and it stops working. They give a poor image quality when you are using projectors for gaming.
Overloading of current
The more supply of current means more heat inside the device. The ventilators of the tool feel helpless in such cases. The system starts burning, and the burns appear on the screen as dead dots.
They are enormous in number, and they increase by constant current supply. Detach the power source and save the reaming part of the electronic gadgets. This happens when you use a projector on the inverter.
Damaged LCD
The light-emitting screen of the projector breaks due to a sudden jerk or due to heat. Mostly the damage results in the emergence of dark and dead dots all over the screen. The image quality lacks strength, and the display gets poor.
Disadvantages of dead pixels
- The image becomes blurring, and it is hard to understand. The quality of the view lacks its ability to prove itself.
- The repairing of a small portion is very expensive. Precaution is better than repairing in such a situation.
- The dead dots cause internal damage to the tool, and it leads to malfunctioning.
How do you fix dead pixels on a projector?
Take professional help after the detection of dead pixels. In case you want to repair it yourself then, here is the procedure. Take some screwdrivers and unscrew all the bolts. Take off the lid of the projector carefully; make sure the device is not heating.
Unplug all the attaching wiring one by one. Take a fiber-free cloth and dump it in the lens cleaning solutions. Rub it smoothly all over the lens without applying any pressure.
Clean the internal portion of the projector with the rubbing cloth and rub all the drivers and internal screen areas. Remove all the wires and other burnt things from it. Replace them with new things, with better capacity and insulation.
Repair all the chips and micromirrors by reading the manual. Adjust all the parts once again and turn it On. In case the dead dots are still present, then it is a technical case. Carry it to the processionals or replace it with a new one.