Many people have reflected that the charger has only just bought a series of problems? These problems are really 'problematic'?
First. the power indicator is on when charging, the charging indicator is orange
First of all, please check the charger output plug and the battery box charging plug is not tightly inserted. If you are sure there is no problem, check whether the fuse tube above the battery box is open or the fuse holder has a loose contact poor phenomenon. In addition, some models have to open the battery lock before charging. If the above faults are ruled out, consider whether the charger output line open, available multimeter voltage block (200V block) to measure the no-load output voltage of the power supply, should be 41-44V (with 36V batteries vary depending on the charger), such as no words, may be the charger output line open, and the charger open, change an output line, you can remove the problem. Note: When replacing the charger output line, be sure to pay attention to the positive and negative polarity of the original machine do not reverse.
Second, the power indicator does not light up, the charging indicator does not light up
Check the charger input power plug and the utility is not well connected, the charger input plug into a normal power outlet to try, such as the situation remains, the charger shell open, observe the fuse is not broken, such as not broken, first check whether the power input line is good, in the exclusion of the power input line failure, should check the circuit board near the high-voltage area components whether there is a false solder, the fuse holder is not poor contact. Fuse holder whether there is poor contact phenomenon, focus on checking the transformer T1, transistor V1, V2, etc. whether there is a false solder phenomenon. In addition, R5 or R6 open circuit, will also cause the above-mentioned failure, such as the machine fuse has been broken, do not replace the large amperage fuse tube (charger fuse tube is generally 2A), should focus on checking D1-D4, V1, V2, R4, R7 and D15, D21 have not been damaged, such as damage, available with the same type of replacement. 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, so you need to check and replace these components one by one before powering on.
Third, serious heat, and even shell burning deformation phenomenon
This is mainly part of the user often carry with the car caused by the failure of some components loose. The main performance: C18 loose soldering, will cause V1, V2 working state is not normal, heat, serious charger shell deformation, circuit board scorching, resulting in V1, V2 damage, C18 can be re-welded, check V1, V2, R4, R7. If you still can not troubleshoot, you need to check D15, D21 whether there is an open circuit, in addition, some manufacturers of output rectifier tube Using a double diode, one of the open circuit also causes the above-mentioned fault, sometimes the fault will cause V1, V2 in a damaged. Need to check and replace at the same time.
Fourth, heat generation and accompanied by abnormal sound
The cause of the failure is the output level elimination capacitor R31, C17 damage caused. In addition, C12 open circuit or deficiency soldering will also cause the above failure.
Five, work with abnormal sound, not charging into the power
Check the circuit board C8 whether there is a false solder or damage, general replacement C8 can be solved.
Six, work with abnormal sound, power indicator and charging indicator dark and flashing
The cause of the failure is IC1 damage, be careful when replacing, do not damage the printed board copper foil, replace normal, need to adjust R28 so that the charger output voltage in the normal operating range.
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