Charger in the process of charging problems and solutions
Apr 07, 2018| 1: Power does not start:
Plug in, large capacitor 2 has 300V voltage, pull out the power, large capacitor voltage slowly. Check all the circuit boards for the phenomenon of desoldering. After the welding is completed, replace the 3842 with a new one.
2: Strobe: First solder the circuit board once again, try the machine again. If it is flashing, please check the output resistance. 0.1 euro. 3W power. Connect to the negative terminal of the output line and replace it with a new one.
3: The output voltage is high, the power is on, the voltage is higher than more than 70V, the charge does not turn on the light, the circuit board is soldered once again, try again, if the voltage is still high, please replace the optocoupler, test machine again, or output high , replace the 431 reference regulator, test again
4: howl, fever, insufficient charge: When the power is measured, the large capacitor voltage is less than 300V, and the capacitor is generally invalid and can be replaced.
5: Severe fever, please renew the fan.
6: The output voltage is not stable, first solder the circuit board once, then test the machine, then change the output capacitor 63V 470UF capacitor for a new test machine,
7: Charging does not turn on the light, use the detector to test the data, and then replace the 358 or 324 for a new test machine.
8: The charging is unstable, sometimes it can be charged, sometimes it can not be washed, the tester is used to test various data, and then the input and output power lines are all replaced, and the repair welding circuit board is tested.
9: Electric burn insurance: first detect the breakdown of the power tube, if not, then replace all four rectifier diodes, test machine,
10: No output power, power test machine, large capacitor 2 end 300V voltage, and slowly decline, first detect the output side of the large diode breakdown, repair welding, test again
11: power on 2 red lights: power test machine, no-load voltage is normal, and then 358 or 324 for a new test machine,
12: no output power, can start normally, the indicator is normal, first renew the output line, for the charger directly short circuit relay test machine charger,
13: Power flash, please repair the welding transformer pins, and then test machine, if still, please check 431, optocoupler, the output part of the diode is short circuit, the transformer core is loose, the power input part of the 10 European small resistance is open circuit. Or substitute 3842 again test machine
14: Charging does not turn on the light, first use the tester to test the data, generally charge the new battery voltage is not higher than 59.5, charge about half a year the battery is not higher than 58.8, is normal, higher than this voltage may not turn the light
15: The output voltage is low: repair the circuit board. Test machine, and then change the input and output capacitors to retest
16: low output, hot, if the output voltage is less than 40 V, and the power tube, the transformer is hot, generally a problem with the transformer,
17: Difficulties in starting, sometimes it can sometimes not start, repair the circuit board, after the test machine, if you still want to change the input part of the small capacitor to retest the new machine, 50V 47UF
18: After burning 3842,3842, the new tester plugged in and heard a loud sound. This was measured by the large-capacitor 2-terminal voltage of 300V slowly, indicating that the 3842 was punctured again. The circuit board was first repaired and the transformer was checked. Whether the foot is loose or if the lead wire is disconnected, whether the output part of the big diode is open or not, and whether the circuit board is broken or not.
19: The above faults are suitable for common failures of most single-circuit chargers on the market, and technicians can be consulted at any time during the operation. The electrical voltage parameter table is as follows Charger Model 36V Charger 48V Charger 60V Charger 64V Charger Standard Float Low Voltage 41.4 55.2 69.3 73.6 Maximum Voltage 44.2 58.8 73.5 78.4 Charger Actual Current Charger Model 36V--64V12/14A 36V- --- 64V17/20A 36V---64V24/28A 36V---64V20A standard maximum current 1.5---1.8A 2.1-----2.6A 2.4---3.2A 2.6A conventional judgment charger performance is good or bad 48V charger, the maximum voltage is not greater than 59.6V, greater than this voltage, charging may not turn on the light, low voltage is not less than 55V, below this voltage caused by insufficient charge, long time easy to battery loss, current, such as 48V 20A charging The maximum current is less than 3A. More than 3A may cause the battery to lose water earlier, the minimum is not less than 2.1A. Low voltage This current caused undercharge.