With the continuous development of science and technology, even low configuration cars can see the figure of car navigation. However, some friends said that the car navigation screen was black, even if the screen was restarted, it would not work. So, how to repair the navigation if it can't be turned on? If you want to know the answer, go ahead.

汽車導航屏幕出現不能開機的現象，很大可能是因為線路接觸不良，需要及時檢查一下線路是否出現虛接的情況。如果有的話自然會導致屏幕黑屏，這時候只要將其虛接的部位連接完好即可。當然，也可能是因為電源信號線出現老化了，可以嘗試更換一條新的上去，如果導航能夠開機的話，就說明的確是電源信號線存在問題了。

The phenomenon that the car navigation screen can not be turned on is very likely due to poor line contact, so it is necessary to check whether the line has virtual connection in time. If there is, it will naturally lead to a black screen. At this time, as long as the virtual connection part is well connected. Of course, it may also be that the power signal cable is aging. You can try to replace it with a new one. If the navigation can be turned on, it means that there is a problem with the power signal cable.

那么，如果檢查了上面兩種情況之后，導航屏幕依然還是開不了機的話，那應該就是屏幕使用時間過長的緣故，導致供電模塊出現故障，不僅存在卡頓的情況，嚴重的話就是我們今天所說的黑屏現象了。當然，也可能是因為電路設計存在缺陷。但像這種模塊異常和設計缺陷的問題，已經超出我們的解決能力范圍之內了，需要到維修店進行檢查維修或直接更換才可。

Then, if the navigation screen still can't be turned on after checking the above two conditions, it should be because the screen has been used for a long time, which leads to the failure of the power supply module. It is not only the situation of jamming, but also the black screen phenomenon that we call today. Of course, it may also be because of circuit design defects. However, such problems as module abnormalities and design defects are beyond our ability to solve. We need to go to the repair shop for inspection and repair or direct replacement.