Views: 0 Author: Site Editor Publish Time: 2022-05-20 Origin: Site
Outdoor Front Maintenance Led Display screen body is thin, does not occupy space, save material, lightweight, easy to install, hang directly to the wall, easy maintenance. After the maintenance of the outdoor screen, because Outdoor Front Maintenance Led Display can not be disassembled from the front for waterproof considerations, the cost of the outer frame is higher. However, maintenance of Outdoor Front Maintenance Led Display is inevitably required during use to avoid problems
l The reason why the whole screen is not bright and dark on the unit board
l Steps to deal with common problems of unit board failure
Visually inspect whether the power connection line of Outdoor Front Maintenance Led Display, the 26P line between the unit board and the power module indicator is normal. Use a multimeter to measure whether the Outdoor Front Maintenance Led Display unit board has normal voltage, and then measure whether the power module voltage output is normal, if not, the power module is judged to be bad. Measure the power module voltage is low, adjust the trim (so that the voltage reaches the standard.
The problem must be judged first after the main way of handling, will be obvious and serious first, small problems after the processing. outdoor Front Maintenance Led Display short circuit should be the highest priority. Resistance detection method, the multimeter to the resistance file, detect a normal board of a point of the resistance value to the ground and then detect another board of the same point test and the normal resistance value is different if different then determine the scope of the problem.
Voltage detection method, the multimeter to the voltage file, detect the suspected problem of a point of the circuit to the ground voltage, compare whether similar to the normal value or determine the extent of the problem.
Short-circuit detection method, the multimeter to short-circuit detection gear, detect whether there is a short circuit phenomenon, found a short circuit should be resolved as a matter of priority so that it does not burn other devices. The method must be operated in the case of circuit power failure, to avoid damage to the table.
Voltage drop detection method, set the multimeter to the diode voltage drop detection file because all ICs are composed of the basic numerous unit parts, only miniaturized, so in when it has a current through a pin, there will be a voltage drop on the pin. Generally, the same model of IC on the same pin voltage drop is similar, according to the value of the voltage drop on the pin to compare good or bad, the circuit must be powered off to operate. The method has certain limitations, such as the device being detected is high resistance, it can not be detected.
Shenzhen Atop Led Opto Electronic Co., Ltd is a high-tech enterprise engaged in the production, R&D, marketing and service of display devices such as Outdoor Front Maintenance Led Display. We can provide customers with a series of services such as project consultation, whole project solution, after-sales maintenance, problem overhaul and maintenance.