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Here is the next part of Xiaomi Mijia 1C Robot Vacuum Cleaner repair. The video includes replacing the original resettable fuse (marked 3324) with a different type. The reason for the replacement is that after a few years of using the vacuum cleaner, the original fuse began to increase its resistance, which caused a greater voltage drop on it at higher current consumption, which was probably the reason for the sudden shutdown of the vacuum cleaner in "Strong" or "Turbo" suction power mode.
Type of new resettable fuse:
RG500-16
PTC polymer; 5A; 5.1mm; Ø0.81x7.6mm