How to repair electric car charger?
3, if the wire is not broken, and the high voltage filter capacitor, but there is no 300V DC voltage, how to do?.The inspection procedure is as follows:A, measuring the BC, BD, GH, and GI with a multimeter, a resistor, or a diode file. The results should all be channels. If that doesn't work, then there's something wrong with that part. For example, amount to GH, GI up, the broken common mode filter (probably pin Uunsoldering).B and then use the multimeter diode to measure the forward voltage drop of the 4 diodes, and then measure D to E, I, E, J, I, J, D, and watch the value is normal, if not normal, it should be diode damage.
Of course, can also give the charger plugged in, with the DC voltage profile measurement of high voltage on the filter capacitor (EJ) has no DC voltage nearly about 300V, but if still not, but also with the exchange of files to measure power line (BG) is a 220V input. Used to rule out whether a fault is caused by an electrical wire break.
2, if not, then use the multimeter's resistor or diode gear to check whether the power line is open (non charged), that is, AB and FG in figure 1;
Routine overhaul of a charger step:1. First, check if the fuse is clearly broken. If the circuit breaks to fifth steps
