Charger Model: VOLVO charger up from zoning can be divided into: Forklift electric car charger charger smart charger charger adjustable floating charge machine, more similar to the first three charger is more familiar generator charger manufacturers, here is not introduced. The fourth charge machine with constant current limiting function can be used to start loads such as diesel generators will not damage the charger, and is widely used in generators, pump Fu charger supplier of communications systems, railroad systems, UPS Dongguan Fu automatic float charger, power systems, DC uninterruptible power supply battery, etc., in order to ensure that the battery charge, however, does not charge less. The fifth charge is widely used in battery manufacturing plant plate formation, the initial charging of the battery and multiple sets of users to charge the battery, such as garages, power plants, battery stores, railway systems, communication systems. Charger Model: 3972730 power light is off, the charge indicator does not light. Check the charger input plug and mains have not connected, you can plug the charger input to a normal power outlet to try, if the situation remains the same, the charger shell open, look at the machine has not broken fuse, such as not broken, first check whether the electrical power input line well after troubleshooting power input line should check the high pressure area near the circuit board components whether Weld, fuse holder if there is bad phenomenon, focusing on checking the transformer T1, transistor V1, V2, etc. Are there Weld phenomenon. In addition, R5 or R6 is open, will lead to the failure, such as inside the fuse is broken, then do not replace the large-amp fuse (charger fuse generally 2A), should focus on checking D1-D4, V1, V2, R4, R7 and D15, D21 for damage, if damaged, can be used the same type of replacement. Please note that the above components are damaged, it may also damage one or two, sometimes also damaged several, one by one to check the maintenance required to energize after replacing these components. Fu charger, electrical, mechanical and electrical faithful by Dongguan Nan Zhongxin Electrical and Mechanical Services Department. Dongguan City, South City Zhongxin Electrical and Mechanical Services Department (zhongxin888.net.cn) strong, credible, in Dongguan, Guangdong and other industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the faithful into the brilliant electromechanical and you work for a better future!