Led the flashlight doesn't work. What's wrong with it?
Should be circuit problems, that is, charging, LED lights and switches are normal, indicating that the two circuit boards connected improperly, please check carefully.
First, the rechargeable battery is damaged, there is no voltage.Two and IED damage, but the possibility is very small, can not all damage.Three 、 each contact part has the open circuit and the broken circuit place. The circuit doesn't work. Check it carefully and be sure to find out why.
1, the switch to take out, put the battery into the barrel, and use the electric things to connect the battery and cylinder body, see bright?. If it's bright, the switch doesn't work. You tighten the switch and try again.2. make sure that your battery is broken, you can also take the lamp holder out of the test, also try the method just now, to see whether it is bright or not. If not, it is likely that the IC or LED on the circuit board is out of order.
