BP Series Pure Sine Wave Inverter 12VDC 220VAC 600W
1. After starting up, the buzzer will beep for a long time, the output end of the bulb can be lighted normally, the working indicator is always on, and the fault indicator is not on.
2. Measure the input voltage 12.67V.
Analysis of the possibility of the cause
1. According to the indicator light and input and output voltage, it can be judged that the inverter itself is normal.
2. The buzzer beeps for a long time, which can be judged as a fault of the transistor Y1 that controls the on and off of the buzzer, caused by continuous conduction.
Solutions and steps
Remotely guide customers to replace the corresponding component N4, that is, the transistor Y1.