Is there any sound on the white screen of Xianke movie machine?

1, service life of components is aging. 2. The video file cannot be played, and the video file is damaged. 3. The screen line is broken. 4. The decoding circuit is out of order.

Suggested treatment:

1, repair welding (air gun blowing welding is good for tin-rich patches, but it may not be able to weld the feet with less tin). If the circuit board is obviously hot, it should be cleaned with rust remover.

2. I received a mobile DVD, the charging and lithium battery indicator lights were on, and the screen and laser head were completely unresponsive. Observe whether the original circuit board is burnt out, and the circuit board is not hot.

3. Try to remove the battery by opening it. If there is no program running in the background installed on the disk, you can unplug the card at the same time, then leave it for a while, and then install the battery to boot.

4. generally look at the cable. If the cable is loose or damaged, it will be blank. In this case, you can go to the maintenance master to change it. In fact, many times the phenomenon of "white screen" we encounter can be solved by ourselves, that is, the fake "white screen", while the real "white screen" can only be solved by brushing the machine at present.

5. If all the above methods fail, then hold down the pen shape, hold down the power button at the same time, and then press the middle of the left keyboard navigation button quickly and continuously. After success, you can enter the menu interface. If there is a black screen in normal use, it is basically a software problem. It is recommended to upgrade your software and go to the repair shop for repair.