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What is the reason for the display screen malfunction after replacing the car battery?

1 Answers

NadiaLee

07/29/25 11:11am

The reason for the display screen malfunction after replacing the car battery is due to a circuit fault. The detailed causes and solutions are as follows: First, check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. Then, check whether the ribbon cable connection is good. If there is a problem, replace the ribbon cable. Check whether the display screen is damaged. Replace the display screen for testing. If it returns to normal, the display screen is damaged. If the power supply is normal and the ribbon cable connection is good, check the video output signal of the motherboard and replace the motherboard for testing. Precautions for replacing the battery: It is necessary to distinguish whether the vehicle battery is a regular battery or a start-stop battery. Accurately identify the positive and negative poles. If there is acid corrosion on the terminals during replacement, it must be cleaned thoroughly. When removing the battery, disconnect the negative terminal first and then the positive terminal. When installing the battery, connect the positive terminal first and then the negative terminal. The terminal clamps must be tightened. Battery maintenance precautions: Avoid storing the battery in a discharged state. A discharged state refers to the battery not being charged in time after use. When the battery is discharged, sulfation is likely to occur, with lead sulfate crystals adhering to the plates, blocking the ion channels, resulting in insufficient charging and reduced battery capacity. When the battery is not in use, it should be charged once a month to extend its service life.

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