Projector Troubleshooting – 17 Common Projector Problems

Every projector user who has been using it for a long time will agree to the fact that projector troubleshooting is an essential aspect that one should know. Whether you use a home theater projector, business projector, Pico projector, or classroom projector, you are going to face malfunction at some time.

The only way to solve those malfunctions is by troubleshooting them. Projector nowadays has become an integral part of our daily life as it is not only used for daily entertainment at home but it is widely used in offices and educational institutes.

Many people are even using it as a portable entertainment and presentation device. So whatever your usage is, you need to know about the common projector problems faced by most users.

Knowing most of the projector troubleshooting processes will help you to solve most of the malfunctions and enjoy uninterrupted usage.  We have created a list of some common malfunction along with their solution so that you won’t have to look anywhere else.

Without further ado, let’s start with all the problems;

Projector Display (Image and Color) Problems & Troubleshooting

Projector Display (Image and Color) Problems

“No Signal” or “No Image” From The Projector: How To Fix!

“No Signal” is a common problem faced by many users. If your projector shows this message and you can easily rectify it by going through the following tips;

  • The first thing you need to do is to check whether the video source plug is compatible with the projector. If you are using an old video device to a new projector or vice versa, then there is a high chance that you will find a signal malfunction in the connection. Always opt for compatible devices before setting up the projector.
  • Check with different video sources, and if you don’t find any issue, then there might be some problem or compatibility issue with the primary video source.
  • Connecting an iOS device to the projector without any adapter often leads to a “no image” issue as the cables aren’t compatible with the device. So you need to use an MD826AM/A adapter that will use the projector to receive the signal and display the image.
  • If your video source is not connected to a power source with a surge protector or if there is any earthing issue, then there will be an issue in the data flow. Similarly, lack of battery backup in laptops, smartphones, or tablets can also lead to discrepancy which causes a blacked-out screen.
  • Sometimes using a faulty HDMI cable or HDMI cable with an adapter creates issues in the connection between the device and projector. First, check whether the cable is faulty by using another, and if the problem still pertains, then there is an issue with your projector.
  • After all the evaluation, if you still face the same video signal problem, then you contact the service center of your projector.

Yellow Screen Fix

The yellow screen is yet another problem that is faced by many, and it is mainly due to faulty cable, dust, poor polarizer, or aging lamp. However, you can fix it by following the most basic troubleshooting tips listed below;

“No Signal” or “No Image” From The Projector: How To Fix!

  • First, you need to check whether the yellowish screen is due to the screen or lens. For a yellowish screen, you can easily fix it by cleaning the screen with a soft cloth and some screen cleaner.
  • If you have an aged lamp or if you frequently switch on and switch off your projector, then it causes a reduction in the lamp’s intensity. Proper usage or replacing the old lamp is the only way to solve it.
  • Cleaning the lens, projector, and cooling fan can assist you in getting rid of the yellowish tinge on the screen. Accumulation of dust and pollutants on internal parts often leads to a yellowish projection.
  • A polarizer is a crucial part of a projector as it controls the color output on the screen. Malfunction in the polarizer can make the projector produce yellowish output on the screen with occasional discoloration in spots. Replacing it with a new one is the only solution.

Purple Dot On Screen

Do you have a purple dot on the screen? It is a standard issue that you can easily fix without needing professional assistance.

Projector Is Only Projecting A Partial Image Or Part Of The Image is Cut Off: How To Fix!

  • Purple dot on-screen generally arises due to the build-up of dust and dirt on the green LCD panel of your projector. So you just have to clean them using the vacuum cleaner as it will help you to reach narrow areas. You also need to clean the air filter separately so that other specks of dirt can’t settle on the panel.
  • After properly cleaning the panels and lens, if you still see purple dots on the screen, then you try with other inputs. Sometimes changing the input source often vanishes the dot.

Projector Is Only Projecting A Partial Image Or Part Of The Image is Cut Off: How To Fix!

Partial image or image cutoff is a slightly trick technical issue that you can solve with some assistance. We have put forward some plausible solutions that can help you get rid of it and enjoy a full-screen image.

  • Mismatch in the native resolution causes the projector to show a cropped or partial image on the big screen. You have to make sure that the resolution of your video source should be identical to the native resolution of your projector.
  • Always check the native resolution of your projector before connecting to any external device. The native resolution will be available at the manufacturer’s website or manual book.
    Projector Is Only Projecting A Partial Image Or Part Of The Image is Cut Off: How To Fix!
  • If there is a mismatch in the resolution from your PC or laptop, then do a right-click on the Main Window screen and opt for Properties. From there, go to the settings, and change the resolution so that it matches with the native resolution of the projector.
  • When connecting multiple devices to the projector, make sure all the devices should match the projector’s resolution. While connecting phones, try to play content that coincides with the native resolution of your projector and keep cropping problems at bay.

Only The Projector’s Start-Up Screen Is Displayed: How To Fix?

There are various malfunctions that can become the reason behind the problem of only the projector’s start-up screen is displayed when you switch on the projector. So let’s check out how you can solve it;

Only The Projector’s Start-Up Screen Is Displayed: How To Fix?

  • When you see only the projector’s startup screen, then there is a problem with the cable connection. Either the cables are not correctly attached, or else there is an issue with the cable or port.
  • Improper configuration of laptop or PC may be another reason that causes the projector only to show the display screen. You might have set them to the “extend your desktop” option rather than choosing the Duplicate or mirror option.
  • Choosing the wrong resolution can make a projector show only the startup screen and nothing else. You need to make sure everything is in the exact native resolution. Go to the display properties of your PC or laptop and change the resolution so that it can match the native resolution of your projector. Or else you can hold the Windows button and then press the P button to duplicate the screen.
  • If you are using a Windows OS device, then you need to check different projector options on your screen, and the appropriate option will allow the projector to display the full content.

Projector Turns On But No Picture: Check Out The Fix!

Projector Turns On But No Picture: Check Out The Fix!

If your projector turns on, but it doesn’t project anything on the screen, then you can try the following solutions;

  • First, check whether you have accidentally pressed the A/V Mute button and or closed the lens cover. Make sure the lens cover is completely removed and the A/V source isn’t in a mute state.
  • Thoroughly check the cables whether they have been properly connected or not. Also, find out whether the HDMI or VGA cable is faulty. You can unplug and plug the device to check whether the problem is solved.
  • Go to the Display setting and evaluate them to find out that all the settings are in the correct state.
  • If your projector is in Eco Mode or Eco Mode+, then change it to Normal mode, and it could bring back the display. It might be due to the aging of the lamp as the lamp at the end of their lifecycle fails to produce bright images on Economy modes.
  • Restart both the device if the projector turns on and doesn’t show any picture on the big screen. Sometimes restarting the devices allows the devices to reset to their old state.
  • Wake up the projector, PC, or laptop from Standby mode or Sleep mode as it can lead to a blacked-out screen. Press the power button or any button for the computer, and you will see images on the screen.

Projector Display Upside Down

Projector Display Upside Down

The projector display being upside down is a common problem, and you can quickly fix it through the settings of your projector’s menu. So let’s check out how you can do it;

  • When you see an upside-down button on the screen, then simply press the A/V mute button for five seconds, and the image will quickly reappear with a flipped position.
  • You can go to the Menu button on your projector and select the Display button located somewhere in the middle. Then select the projection mode and check whether it is front ceiling or rear mode. These two settings flip the image when you project something. So put it in front mode, and you will get proper image output.
  • You can also change the problem by using the on-screen menu. Just go to the Display settings or Extended menu (for some projector) and put the projection mode in front.
  • After all the above solutions, if you still face the upside-down image issue, then you need to contact a local professional or get in touch with the service center. There could be an issue with the configuration or calibration of your lens.

Images Have Lines and Dots: Here Is A Quick Fix!

Facing dots and lines on the screen? Here is a quick fix that will eliminate all the blockages;

  • If you are using a DLP projector, then the DMD chips might be the main reason behind lines and dots on the screen. DMD chips are known for their crisp quality, but they are also sensitive to temperature. Overheating can cause the chip to create dots and pixels on the screen.
  • Accumulation of dust in air vents and filters can be another reason behind the dots and lines. If there is a blockage, then the chip will develop dead pixels over time, and you will eventually start getting lines and dots issues.
  • Cleaning the projector vents and filter at a regular interval can assist you to avert the issue. You can use vacuum cleaners or regular clothes to clean the areas. You should also avoid putting the projector in an area that faces a lot of dust and high temperature.
  • If the problem still persists, then you will have to replace the DMP chips with a new one. The micro-mirrors in the DMD chips might have been permanently damaged, so there is no other option than replacement.

Other Projector Common Projector Problem

The Projector Does Not Power On When Pushing The Power Button: How To Solve It?

The Projector Does Not Power On When Pushing The Power Button: How To Solve It?

Can’t switch on your projector even when you are pushing the power button? Here are some following causes along with their solutions;

  • The primary thing you need to check first is the connectivity of the projector to the power outlet. Evaluate whether the power cable is connected correctly and also check if there is any damage to the power cable, plug, or power socket.
  • You also need to check whether you have used the correct input for connecting the projector to the power cable. Also, make sure that there is no bend in pins if you are using a VGA connector. If you are using an HDMI port, try using it in another device to determine whether there is a fault in the cable or port.
  • Not using the PC or projector for more than 10-15mins puts them in sleep mode, so in that time, the projector won’t show anything even when pressing the power button. You need to press the function key of either of the devices to wake them up. Sometimes you might also need to switch on the monitor to get a display on the projector.
  • If your projector comes with some power indicator or status, then you can check the meaning blinking or status message from the manual book and solve the issue.

My Projector’s Remote Is Not Working Correctly: What Can I Do To Fix It?

There could be many reasons that made your remote not working correctly. So let’s find out how can you solve this issue;

My Projector’s Remote Is Not Working Correctly: What Can I Do To Fix It?

  • Low battery backup or a dead battery is a common reason that your projector’s remote is not working properly. Improper placement of battery or loss of attachment can also lead to improper functioning of the projector’s remote. So you should replace it or fix the position accordingly.
  • Another common reason that can lead to remote malfunction is damage due to long-term usage. Getting a new remote from the projector’s maker is the only solution.
  • Check whether any of the buttons in your remote is stuck because it often forces the projector to go to sleep mode. Lift the button up so that your projector can receive the signal from the remote.
  • If you are using an old infrared remote control, then you should adequately angle it to the projector’s reception angle. When your remote is out of range of the projector, then it can cause a malfunction in the remote’s working.
  • You can solve the issue by turning off all the receiver functions of the remote located in the projector. Then switch it on, and your remote will start working again.
  • Using a universal remote control to operate the projector might often cause the remote not to work properly. Check the assigned ID and make sure your projector has been paired with that ID number.
  • Interference from other infrared devices, fluorescent lighting, strong radio signals, or direct sunlight can stop the receiver from getting any signal. Move the projector to a location that has minimal interference, and you will see the remote is working again.

Light On Projector Is Blinking: Check Out The Fix!

Light On Projector Is Blinking: Check Out The Fix!

Blinking of LED even when the projector is switched on, then it indicates that there is a projector malfunction. You can go through the following tips to solve it;

  • The most common reason behind a blinking LED is that your projector’s lamp is dead, and you will have to replace it. Generally, after 2000hours, ordinary lamps die, while an LED lamp can easily last more than 10000hours.
  • There can be other unknown issues, so you can either consult the manual or contact the service center.
  • While searching for lamps, you should check the lamp rating and type appropriately because most of the sellers don’t offer a replacement. However, if your product is still under warranty coverage, then you can get it replaced by the manufacturer for free.
  • If you have a DLP projector, then it would be wise to opt for an LED lamp rather than standard ones as they can last for years.

My Laptop Shows Full Desktop But Projector is Only Showing Wallpaper Without Icons: How To Solve?

My Laptop Shows Full Desktop But Projector is Only Showing Wallpaper Without Icons: How To Solve?

Getting only the wallpaper on the projector’s screen even when your laptop is showing the entire desktop? Here are some most basic troubleshooting tips that will solve the issue;

  • The problem of getting only the wallpaper image on the screen is due to the wrong display mode. You need to go to the display properties from settings or by pressing right-click on the desktop and then select Duplicate mode to mirror the computer screen.
  • If you are in Extend mode, then your projector’s screen acts as an extended display. You can drag the app icons from the laptop’s screen to the projector’s screen and use them.
  • You can try fixing the problem by putting the display mode to Duplicate, and it will duplicate the PC’s desktop on the large screen.
  • The problem could arise due to some specific graphics properties. Select multiple displays from options from graphics properties, and from there, choose the Dual Display Clone option. Then select the PC as the primary device and the projector as the secondary device. Click on the apply and then Ok to save the settings. You will then see the desktop with icons on the big screen.

Projector Not Detected On Windows 10: What To Do?

Projector Not Detected On Windows 10: What To Do?

If you have upgraded to Windows 10 but are still using an old VGA projector instead of a modern unit, then the latest Windows OS might show some issue detecting the projector. Windows 10 doesn’t go well with old devices, especially projectors without HDMI ports.  However, you can easily solve it by going through the following tips;

  • Even though Windows 10 comes with a pre-built Plug ‘n Play facility, old projectors need driver updates for detection. After updating the driver, you will see the OS will detect the source. Along with the driver, try to update the Windows 10 OS and make sure you have the latest update.
  • Updating the driver is easy, and you need to press Windows Key with the R button. It will open the Run dialogue box, and there you will have to type devmgmt.msc. Then it will open another window where you will have to click COM & LPT port to expand. From there, just right-click on the device driver and click update. For updating OS, go to the Update & Security, then Windows Update, and select Check for Update.
  • Apart from updating, you can also do troubleshooting to allow Windows 10 to detect the projector. Head to the Update& Security option from Settings and then choose Troubleshoot. Then select Find and fix other problems, which will give you the hardware and device troubleshooters option.
  • You can also do driver rollback by going to the Device Manager. Just select the Display adapter and monitor driver option and select the rollback driver option from the menu. It will take the driver to its earliest version of Windows 10 so that it can recognize the old projector.

Projector Not Showing Computer/Video Source Screen: How Can You Solve It?

Projector not showing a computer or video source screen? Don’t worry as we have put forward some effective solutions;

  • The image of the video or computer might have been muted through the A/V mute button. Clicking the A/V mute button will bring back the image.
  • When the projector or computer goes to sleep mode or standby mode, you won’t get any video source screen. So you press the power or keyboard buttons to wake them up.
  • Put the lamp mode from Eco or Eco+ to normal mode because your lamp might be at its last life cycle. Also, try to increase the brightness because the lamp might not deliver a good amount of brightness.
    Projector Not Showing Computer/Video Source Screen: How Can You Solve It?
  • Ensure your projector is set to the right Signal menu and it is compatible with the video source. Whether you are using a tablet, PC, laptop, etc., it should match the signal function of the device.
  • For Windows Media Center as a video source, you need to switch from full-screen mode to others.
  • Always keep the Message option switched on in Display properties when you are using a PC or other similar video source.
  • If you have the DirectX function turned on for apps, then you have it turned off to get a video source screen on the projector.
  • If all the options fail, try to reset your projector settings from the Reset option located in the menu. Most of the time, you get the video source after resetting the projector.

Projector No Input Detected: How To Solve It?

Projector No Input Detected: How To Solve It?

Failing to detect any input by your projector is a serious issue, but it is solvable. Here we present some tips that can help you along the way;

  • Check whether the cables are correctly plugged and if the ports are working, but the projector is not detecting any input, then quickly take it to an authorized service center. You can hire a professional if your projector is out of warranty. There might be other internal damages that you can’t repair at your home, even if you are aware of the mechanism.
  • Sometimes if there is a fault in the power outlet, port, or video cable connecting the devices, then you won’t see any visual. Damage in the power cable also causes disruption in the detection of input by the projector.
  • Ensure the latches in the projector’s lens are closed; otherwise, you won’t get any visuals on the screen. Many times, users open the latches and forget to close them.
  • Faulty HDMI or VGA cable can be a potential reason that your projector can’t detect any input source. Moreover, if these cables aren’t properly placed, then it can also result in no input signal in the projector.
  • Overheating can be another issue that can lead to a “no input detected” issue by the projector. Check if the projector is running above the favorable temperature and if it does, then quickly shut it down before it does any significant damage.
  • Lastly, you can reset the lamp timer and consult the manual for the proper settings. You can get assistance from an expert if the timer settings feel complicated to you.

Projector Sound Problem & Troubleshooting

There’s No Sound Coming From My Projector: Let’s Quickly Fix It!

Projector Sound Problem

The sound issue in a projector primarily arises with devices with inbuilt speakers, and users hardly face when they use external speakers. So here we present some basic fixes;

  • The volume setting might have been accidentally set to the lowest level, so you need to raise up the volume.
  • The video and audio might be temporarily paused through the A/V mute button located on the monitor. You need to press the button again to resume the audio as well as video playback.
  • There might be issues in the audio cable or the HDMI cable between the projector and video source. The cable might be damaged, or there is an issue in either of the ports.
  • If you are using an HDMI connection and you don’t get audio while playing any video, then put the content source to PCM output.
  • Check whether your projector has been set to the right source type because if you set it at the incorrect source, then the projector won’t put out any sound. Go to the source type and set it to the right source type.
  • However, if you are using a USB source for display, then you will have to switch on the audio from the projector’s app on your PC or laptop.

Why is My Projector So Loud: How To Fix It?

Hearing loud noises from your projector while enjoying your movie or providing an important presentation? Well, it could be the fan or cooling system making the system. Here some vital that tips that can help you to handle the issue;

  • Accumulation of dust and debris could be the main reason behind loud noise coming out of the cooling fans. When the air vents get clogged, the fan starts making loud noises when it is at full speed.
  • Try to clean the air vents with the help of compressed air cans rather than using vacuum cleaners as it can cause damage to the electric components.
  • Find out if there is any physical damage to the fan. Damage to the ball bearing or blades can also cause the fan to produce loud noises.
    Why is My Projector So Loud: How To Cure It?
  • If your projector comes with Eco, Eco+, lamp saver, or other similar modes, then try to put it in that mode. It will not only reduce the fan noise, but it will minimize blockage from the fan.
  • If your projector comes with fan speed control, then you should lower it, and it will automatically bring down the noise.


So we can conclude by saying that we hope our projector troubleshooting tips will help you to solve the issue without much hassle. Through this guide, we have highlighted all the common projector problems faced by users, so you won’t have to worry if you suddenly face any of those. Projector has become an essential part of various aspects, but like all electronic devices, it also faces many malfunctions in different circumstances.

Projector troubleshooting helps you to get rid of those malfunctions and ensures a stabilized performance. However, if you are facing any other tricky malfunctions, then try to get in touch with a professional before it gets too late.

Related Article :

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