A friend who uses the projector frequently can encounter some problems, such as the projector is powered on but cannot be lit, or the notebook screen is bright but the projector screen is not lit. These are the projector malfunction or the misuse in use. Today, we will make a big summary of these common problems and give solutions. If there are problems described below, everyone will know how to solve them.
1. Why is there no reaction after the projector is powered on?
Since the projector does not respond after the power is turned on, it is likely that there is a problem with the power supply of the projector. But is there a problem with the internal power supply of the projector or the external power supply? To do this, you should check the projector first. Whether the external power supply specification is the same as the standard required by the projector. For example, if the external power socket is not grounded or the power cable used by the projector is not equipped with the projector, this may cause the projector power input to be abnormal. If you determine that the external power supply is normal, you can conclude that the internal power supply circuit of the projector has been damaged. At this time, you only have to replace the new internal power supply of the projector. Welcome to the home theater network!
2. Why does the projector suddenly shut down during work?
If the projector suddenly shuts down during the work, there are two main reasons. First, the user may accidentally cut off the power of the projector during operation. Therefore, you should first check if the projector is turned off due to human factors. Excluding this situation indicates that the projector itself has a problem and is most likely caused by thermal protection. Because there are many high-end projectors in order to extend the life of the projector, a self-thermal protection function is often used. When there is too much heat generated inside the projector, the working state of the projector will automatically work under this protection state. The projector is automatically turned off, and in this state, the projector does not respond to any external input control; therefore, when this happens, you should not worry about the sudden failure of the projector, you only need to shut down the projector automatically. After about half an hour, and then turn on the projector in the normal boot sequence, the projector will return to normal operation.
3. Why does the projection screen appear white or even blue-violet plaque?
A white or even blue-violet plaque will appear on the projection screen, indicating that the red polarizer in the projector's internal optical system is damaged, so that the image projected by the projector will have a color cast phenomenon. The solution to this problem is to replace it. A new red polarizer. However, the replacement of the red polarizer requires opening the outer casing of the projector. However, due to the high voltage inside the projector, it may cause harm to the human body. Therefore, it is best to ask a professional maintenance person to replace the red polarizer. You can also send the projector to the repair shop for replacement.
4. Why can the projector resume normal operation after replacing the power cord?
If the projector can work normally after it has not been able to work with the power cord, it means that there is no problem with the projector itself. The problem should be on the projector power cable. Generally speaking, the power cord specifications and compatibility of the defective projector will be significantly different from the power cord specifications and compatibility of the original projector. Once the defective projector power cord is used, it may seriously affect the product. Stability of use. For example, the projector's power supply specifications are 110V and compatibility with 220V. If the manufacturer fails to modify the 110V power supply specification to become a product suitable for Chinese users, then this product will definitely come back after purchase. Poor compatibility and short life. Therefore, you must test the power of the projector on the spot when you buy it. Also check whether the normal working voltage of the projector is 220 volts.
5. Why can't the projector project the picture?
The projector does not display the content correctly. The connection of the projector may be problematic. If the connection is good, check the laptop connected to the projector to see if the external video port of the computer has been activated. Generally speaking, the current laptop provides the FN function switch button. Pressing the button and clicking the corresponding function button labeled LCD/CRT or monitor icon activates the video port of the computer. In addition, you should also The projector's signal input port is used to switch the projector to the corresponding RGB port to ensure the projector's projection is normal.
6. Why can't I project the entire image content?
The entire image content cannot be projected, indicating that there is a problem with the display resolution of the projector. At this time, you can readjust the resolution parameters of the computer and the resolution parameters of the projector so that their sizes match each other.
7. Why does the projection machine produce distortion distortion?
The content projected by the projector is distorted. It is very likely that the position between the projector and the projection screen is not square. To eliminate this deformation distortion, you can adjust the projector's lifting foot or adjust the projection screen. The height of the position ensures that the image projected on the screen is rectangular.
8. Why does the projection machine produce image color distortion?
If the projector produces image color distortion, it indicates that there is a problem with the projector's color settings. You can press the projector's remote control or the menu button on the projector's control panel and select all the reset commands under the display menu. If the method does not solve the color problem, you need to carefully check whether there is a bent or broken pin on the display signal line. If the pin is damaged, you need to replace the display signal line.
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