Repair electric bicycles that won't turn on and won't charge the battery. [Bobby Modified] 

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#Bobby Modified
#The screen light doesn't turn on.
#Repair electronic bike
#key light stuck
#Can't charge battery
#The cause of the electric tricycle's lights not coming on or turning on.
#Electric bicycle repair
#Common problems with electric bicycles
#The fuse is not broken, the battery is dead.
#change box
Chase the various sensor wires.