Judge issues must be handled after hsien Chu, clear, severe, small problems. Short circuit LED fluorescent lighting should be the highest priority. 1, resistance detection method, adjust the multimeter to resistance, detect a normal circuit board of a point of resistance, then testing another piece of the same circuit board with a points test and normal resistance values are different, different if you determine the scope of the problem. 2 voltage detector, multimeter voltage regulation, detecting suspect circuit voltage of a point, are similar to the normal, or determine the scope of the problem. 3, short circuit LED Flood Light…