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Outdoor LED Display Panels have been widely used. Many events prefer to use LED display screens, such as dinners, wedding banquets, stage shows, square advertisements, etc. Therefore, LED display repair has also become a common problem. LED display manufacturer in Shenzhen——HTJ Technology introduces several Outdoor LED Display Panels repair tips for your reference
Basic tools needed: Multimeter.
Outdoor LED Display Panels
Problems must be dealt with first, followed by obvious, serious ones, and small ones and short circuits should be the most serious.
1. Observation method, sometimes the circuit can be seen by the eyes. For example, the PCB circuit is broken due to scratches, and sometimes even the electric drill is accidentally broken.
2. Contrast method. The contrast method is very important. Sometimes we can’t judge whether it is burned out. We can replace it with a good IC and try it. Sometimes we don’t remember whether the signals are connected. We can take a good unit board and test it. , You can quickly solve the problem.
3. Elimination method, sometimes there are many reasons for failure, and we need to eliminate them one by one.
4. Resistance detection method, adjust the multimeter to the resistance level, detect the resistance value of a point on a normal circuit board, and then detect the same point on another same circuit board to test whether there is a difference between the normal resistance value if different The scope of the problem is then determined.
5. Voltage detection method, adjust the multimeter to the voltage range, detect the voltage of a certain point of the circuit in question, and compare whether it is similar to the normal value, otherwise determine the scope of the problem.
6. Short-circuit detection method, adjust the multimeter to the short-circuit detection position (some are diode voltage drop or resistance, generally with alarm function), check whether there is a short-circuit phenomenon, should be resolved first after finding the short-circuit so that it will not burn Other devices. This method must be operated while the circuit is powered off to avoid damaging the meter.
