Charger use process should pay attention to those issues

First, the power indicator light when charging, charging indicator light orange First check the charger output plug and the battery box charging plug is not tight. If it is determined that there is no problem, check if the fuse tube on the battery compartment is open or the fuse holder is loose. In addition, some models have to open the battery lock before charging. If the above faults are eliminated, consider whether the charger output line is open, you can use a multimeter voltage block (200V block) to measure the charger's no-load output voltage, should be 41-44V (with 36V battery charger different) , If not, it may be that the charger output line is open, and the charger is turned on and replaced by an output cable to eliminate the malfunction. Note: When replacing the charger output cable, be sure to note that the positive and negative poles of the original machine must not be reversed.

      Second, the power indicator is off, the charging indicator is not bright Check the charger input power plug and the city there is no connection, the charger input plug can be inserted into the normal power outlet to try it, if the situation is still, will be charged Open the housing and observe if the fuse is broken. If it is not broken, first check whether the power input line is good. After troubleshooting the power input line, check whether the components near the high voltage area on the circuit board are empty. Whether the welding seat has a bad contact phenomenon or not, check whether the transformer T1, transistors V1, V2, etc. have the phenomenon of false welding. In addition, R5 or R6 open circuit will also cause the above failures, such as the fuse has been broken, you must not replace the large amp fuse (charger fuse is generally 2A), should focus on inspection D1-D4, V1, Whether V2, R4, R7 and D15, D21 are damaged, and if they are damaged, they can be replaced by the same type. Please note that when the above components are damaged, one or two may be damaged at the same time, and sometimes several may be damaged at the same time. It is necessary to check and replace these components one by one before the power is turned on.

      Third, severe fever, and even the phenomenon of shell burning distortion This is mainly part of the user often carried with the vehicle caused by loose parts caused by the failure. Mainly manifested as: C18 loose welding, it will cause the V1, V2 working conditions are not normal, heat is very large, serious charger shell deformation, circuit board burnt, leading to V1, V2 damage, can be re-welded C18, check V1, V2, R4, R7. If you still can not eliminate the fault, you need to check whether there is an open circuit in D15, D21, in addition, some manufacturers of output rectifier using a dual diode, one of which is also caused by the open circuit failure, and sometimes the fault will cause V1, V2 One is damaged. Need to check and replace at the same time.

      Fourth, the heat, and accompanied by abnormal sound The fault is due to the output stage vibration absorption resistance R31, C17 caused by damage. In addition, C12 open circuit or welding can also cause the above failure.

      V. There are abnormal noises during work and charging is not possible. Check whether there is any welding or damage to C8 on the circuit board. Generally, replacement of C8 can solve the problem.

      6. When there is abnormal noise during work, the power indicator and charging indicator are dark and flashing. The reason is that IC1 is damaged. Be careful when replacing. Do not damage the printed board copper foil. Replace it normally.

      After that, adjust R28 so that the charger output voltage is within the normal operating range.

      Seventh, the output voltage is very high The output voltage is very high (more than 50V), the reason for its failure is C15 short circuit or R26 open circuit, can measure the voltage of "1" foot of IC1 integrated circuit while making concrete judgment. Note: After replacing R26, R28 should be readjusted to keep the charger output voltage normal.

      8, the output voltage is normal, but the charging current is very small Check R30, R11, R13 whether there is poor contact or damage, if normal, please replace IC1 to troubleshoot.

      Nine, the output voltage is normal, no indication or incorrect indication of the charging indicator is usually due to IC2 damage or LED2 damage, replaceable.

      Tenth, the output part of the copper foil burned open the charger and found that the output part of the copper foil blown, which is usually the result of the battery positive and negative polarity reversed, resulting from the failure will lead to many components of the charger is damaged. If the charger fuse is not bad, usually after replacing R30, IC1, and IC2, disconnect the copper foil and return it to normal. If the fuse of the charger has been broken, the D1-D4, V1-V2, R4, R7, etc., which are more serious, may be damaged and need to be measured and then replaced one by one.