Siddhant dhandhania , Make sure the head is clean and undamaged,try lubricating blade very lightly, ensure assembled correctly. If all looks good and still stopping after a very short time batteries could be worn out or motor may be on it's way out. If still under warranty use it for replacement/repair/refund. Use the link below to aid in blade installation. Good luck.
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Philips Norelco BeardTrimmer 3100 Blade Replacement
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