What's wrong with GPS? Can we solve these problems ourselves? Let's take a look at four common hardware problems with GPS:

　　1. GPS cannot use vehicle power supply. Generally, the battery life of GPS is about 1-2 hours, so you need to use the car power supply when driving long distances. However, some car owners have found that the warning lights never come on whenever they use the vehicle's power. After inspection, it was found that the fuse of the original cigarette lighter was blown, and the external power supply could not be used. At this time, car owners often think that the quality of GPS vehicle power supply is too poor, but after many replacements, the situation remains the same.

　　In fact, the reason why GPS cannot use the vehicle power supply is not entirely because of the quality of the vehicle power supply, but partly because of the design of the cigarette lighter.

　　Simple judgment and solution: car owners can first observe which interface their GPS car power supply belongs to, as shown in the figure below. The A plug will burn out when hot swapping, but the B plug will not. The car owner can replace the on-board power supply with plug b.

　　For car owners who use the A interface plug, if they do not want to replace the car power supply, they can plug it in before turning off the car after starting the car to prevent instantaneous high-voltage burnout. If car owners feel that this method is troublesome, they can choose to simply transform the cigarette lighter in their car. Fold the metal sheet on the upper part of the cigarette lighter socket flat (the red mark) to solve the problem that the GPS cannot use the vehicle power supply.

　　2. GPS cannot search for satellite signals

　　Satellite signals are the basis for GPS positioning and navigation. If you can't search for satellite signals, then GPS can't navigate, which means your GPS is just scrap metal. There are generally three situations in which GPS cannot search for satellite signals:

　　1. GPS belongs to the cottage in the cottage, and its "service life" is very short.

　　2. The satellite signal is weak, and it can work normally after adjusting the position.

　　3. It can be used normally after being interfered by other electrical appliances in the car.

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