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Why Do Projectors Get So Hot?

Are you tired of projector overheating?

Well, you might want to check out this article, where I explain why projectors overheat and how to prevent them from happening.

Projectors are an excellent solution for your home theatre needs. They come in various price range, from budgeted projectors under $300 to the high end projectors under $2000. While they seem simple, their design makes them vulnerable to overheating problems. Highly portable projectors for camping are also bound to overheat as they are not equipped with sufficient cooling systems.

When projectors run too hot, they can cause damage to internal components, resulting in costly repairs.

Reasons for Projector Overheating

Let’s us explore the various reasons which are responsible for Projector Overheating:

External Heating Sources:

If you have kept the projector near any other device that emits excessive heat, it will result in quick overheating of your projector. Hence, avoid placing your projector near any gaming console, computer, laptop, or any such machine which emits heat constantly.

Inappropriate Location

Although the modern projectors come with advanced features like keystone correction that allows you to place your projector anywhere you want, you must be cautious while putting it. If you locate your projector at a place where it is difficult to escape the heat, say in a closed cabinet, the projector is bound to overheat earlier than expected.

Airflow is Restricted

Projectors also need to breathe in and breathe out like all other devices. If you place the projector with restricted airflow, the projector is bound to overheat. Hence, it would help if you never placed a projector on a soft unbreathable surface, such as putting it under the sofa, underneath any other surface, in a congested room with no ventilation, or any other small enclosure. 

The problem occurs when heat builds up inside the device. When the temperature reaches a certain point, the projector shuts off automatically to prevent further damage. But if it runs too long without cooling down, the damage becomes permanent. Thus, overheating must be taken seriously.

Precaution to be taken to avoid Projector Overheating

To keep your projector running smoothly, follow these steps:

1) Check for proper ventilation.

It will help if there is enough airflow around your projector so that the air circulates freely. Ensure that there are vents installed at the top and bottom of the unit. Place your projector in a well-ventilated area. Ideally, it would be best to locate your projector next to any heating source. The best location would be somewhere with ample ventilation.

2) Don’t overload your projector.

You should always try to limit the projector’s amount of power. It is recommended that you turn off the projector completely whenever you are not using it. Check the user manual to understand how long you can run a projector in one go! Instead of running two movies back-to-back, consider playing another movie after a break of 1-2 hours so that the projector has ample time to cool down after the 1st movie run.

3) Keep your projector clean.

Dust particles tend to build up in the projector’s optical path and interfere with image quality. Also, when deposited on the vents, these particles interface with the ventilation system of the projector. The projector will overheat as the vents get blocked, restricting air circulation. Remove dust regularly to ensure proper air circulation.

4) Consider using cooling pads

Projector cooling pads are a great way to cool down the projector whenever it overheats. Cooling pads are available in different types, sizes, and prices, suiting your requirements. These are specifically designed to prevent devices like projectors and laptops from cooling down once they start heating. 

5) Maintain the room temperature

If you are placing your projector in a closed and congested room, ensure that the temperature of such room should not go up high. You may need an AC to turn on when using projectors in summers to combat the internal and external heat.

6) Proper mounting

Ceiling-mounted projectors tend to be less overheated. As they have more buffer space to release the heat, ensuring the considerable difference between the ceiling and the projector is essential while installing to provide the required airflow. 

Conclusion

There is nothing much we can do about the internal parts of the projector. However, we can take care of our environment to avoid overheating problems. So, instead of getting worried about the overheating issue, spend some time understanding your projector and taking necessary precautions to prevent this problem.

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