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What is the reason why the projector is automatically turned off soon after it is turned on? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something.

Reasons: 1, the interior of the projector does not clean the dust regularly, the dust filter is blocked by dust, and the high temperature inside the machine cannot be ventilated and dissipated normally; 2, the projector shuts down automatically after no signal input exceeds the set time; 3, the motherboard is overheated and the protector is aging; 4. The high-voltage drive board of the projector is broken.

The automatic shutdown of the projector after being turned on may be caused by the following reasons:

1. The interior of the projector is not cleaned regularly, resulting in too much dust inside the machine, the dust filter is blocked by dust, the high temperature inside the machine can not be ventilated normally, and the machine temperature control group automatically alarms and shuts down the machine. Cleaning the filter will solve the problem by removing dust from the machine.

2. The projector shuts down automatically after no signal input exceeds the set time, and you can cancel the automatic shutdown setting.

3. The problem of projection light bulb (most of these problems are caused by improper operation of users, such as continuous switching on and off, turning on for a long time, etc.) the only way to deal with it is to replace a new light bulb.

4. The high voltage drive board of the projector (also known as lamp power supply) will shut down automatically when it breaks down, and you need to contact after-sales maintenance.

5, the motherboard overheat protector, aging will also automatically shut down, the above reasons still can not solve the proposal to contact after-sales maintenance.

Extended data:

Selection and purchase of projector

1. Make clear the nature of the source to be displayed

That is, what is the line frequency and what kind of display card is output. According to the nature of the displayed source, the projector can be divided into two categories: ordinary video machine and digital machine. When only the full TV signal is displayed, if the video tape is played in the karaoke hall, you can choose an ordinary video machine; to display the signal output from the VGA card, you can choose a digital machine.

two。 Confirm the installation mode

The installation mode of the projector is divided into table forward projection, ceiling forward projection, table rear projection, ceiling rear projection. The forward projection is the projector and the viewer on one side; the rear projection is the projector and the viewer at both ends of the screen. If you use it temporarily, you can choose the table ceiling. If the space is larger and there is an overall arrangement for civil construction, the overall effect of choosing the back projection method is the best. If the space is small, you can choose the method of back projection refraction.

3. Find out the display environment, such as indoor area and lighting

If the indoor area is less than 100sqm, the display area is moderate, there is no sunlight, and the lighting is dim, you can choose a projector with a brightness of about 2000-3500 lumens. When the ambient light is bright and used in a more spacious place, the display area is very large, you need to choose a projector with high display resolution and high brightness, and you can choose a highlight projector with 3000-6000 lumens.

4. Skills of on-site selection and purchase of projector

Check the horizontal scanning tracking frequency range according to the horizontal scanning frequency range given in the technical index, high, medium and low frequencies are selected, and the corresponding image resolution of the three frequency points is calculated. Check whether the projector can display properly at these three resolutions. If the line is out of sync, that is, the picture is twisted or jitter, it means that the horizontal scan tracking is bad.

Check the test box generated inside the projector, or the test box generated by the signal generator or computer, adjust the focus to the best position, change the image contrast from low to high, and observe whether the horizontal and vertical lines of the box are defocused. If so, it means that the focusing performance is poor.

Check the video bandwidth. Video bandwidth directly affects the details of the video. Use a computer or signal generator to generate the highest resolution white background graphic signal that a projector can achieve, and observe whether the minimum character pattern on the screen is clear. For example, when the video bandwidth of the projector is insufficient, the horizontal lines on the screen are solid, while the vertical lines are virtual, and the image details are blurred.

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