LED screen repair is that each LED display manufacturers must be proficient in skills, small series by finishing editing, I will give you some common situations collection about.

A detection method LED display maintenance 1, short-circuit detection, the multimeter transferred to short-circuit detection block (generally with alarm functions, such as guide General stridulated), to detect whether there is a short circuit phenomenon occurs, should immediately find the short circuit Resolved, short circuit is the most common LED display module failure. Some through observation and IC pin pin pin can be found. Short detection circuit should be in the case of power failure operation, to avoid damage Bad multimeter. This method is the most commonly used method is simple and efficient. 90% of faults can be detected by this judgment. 2, resistance detection method, will be transferred multimeter resistance profile, detects the resistance value of a point to a normal circuit board, and then the detection point with a normal test and another piece of the same board Whether the resistance values are different, if it is different to determine the scope of the problem. 3, the voltage detection method, the multimeter transferred voltage profile, detecting suspect a problem at some point of the circuit to the ground voltage, whether the comparison is similar to normal, you can easily determine the scope of the problem Wai.