How about the LED rechargeable flashlight bulb flashing?The components are intact and flashing
It seems your flashlight must be six or nine kind of relatively simple head. The LED flashlight is generally used three batteries of seven, no internal protection circuit would be better with a current limiting resistor, but many are not added, the battery voltage when full power will be relatively high, and LED is very sensitive to the voltage, it will cause harm to the LED.
LED and damaged only replace the bad light emitting unit. The electronic market can go to buy a few and your flashlight like LED, very cheap, the only bad welding off, replaced it, the remaining few backup, because will bad. A long time you will find LED the brightness of a, this is the voltage to blame
