How about a short circuit after removing the old bulb from the lamp holder?
The contact point with a screwdriver to open (in the case of brake), that is, the middle of the screw pole and the peripheral spiral connection point is broken
It is not, the lamp will be disassembled open, keep two threads, do not leave a short circuit after the use of power transmission can be guaranteed other electrical appliances normal operation
Pull down the main gate, with a screwdriver to pick the spring can be
Carefully check the lamp holder, whether you remove the old light bulb, the spring and the adjacent copper level together,
In this case, the installation of the light bulb will trip
