1. Use a clean disposable wet paper towel or a clean wet rag
Wipe the screen clean
2. Restart navigation to restore factory settings
The restart button is a small built-in button. On the back or side of the machine, all GPS navigators have this button (used after crash)
3. After pressing the restart button
Check whether the screen reacts. If it does, it will be reflected in the settings to calibrate the screen. It will be fine after calibration
4. The screen does not respond after restart
Charge the battery for a long time. The battery that can be removed shall be charged by the battery seat, and the battery that cannot be removed shall be charged by the wire; If it doesn't work, it can only be repaired
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