Car horn is a device frequently used while driving, if you often use tone, car speaker quality is poor, and the good times and bad, and sometimes does not ring, such as failure, caused much inconvenience to the owners. Then the car horn does not sound or abnormal sound how to do? How to perform routine maintenance and self-repair? Speaker of the above fails, you should distinguish between a line fault or the speaker's own fault.

Let's look at how speakers work. When pressed on the steering wheel horn button or other location when the current from the battery flows through the circuit of the electromagnetic coil on the horn relay, solenoid relay coil to attract the dynamic contact switch is closed, current will flow to the speaker at the . Speaker within the solenoid current to work, so diaphragm vibration and sound.

Mainly for line fault line virtual access, such as: speaker plug terminals loose, horn relay contact erosion, at the steering wheel horn switch is bad and so on. But in many speaker failures, especially in winter, the problem is the speaker itself, more the fault.

Combined with our use of the environment and other factors, the main speaker's own fault for the following reasons:

Contact ablation: long horn if the horn could easily lead to erosion and the resulting contact resistance, current flow through the solenoid coil decrease, down to attract the armature electromagnetic suction driven diaphragm normal vibration, leading to hoarse pro speaker, not even ring. But constantly honk, if the instantaneous high current through the impedance can still work properly, it will be good times and bad.

Mifengbuyan easy to damp: Although the internal speaker is sealed, but if Mifengbuyan car wash into the mist or water vapor within the air space, moisture vapor can easily lead to contacts does not work.

Electromagnetic coil terminal bad: Some of the electromagnetic coil magnet wire speaker terminals within the connector is crimped aluminum rivet connections, non-solid solder connection, if the end of the first magnet wire insulation paint treatment on the net or not solid rivet crimping is not prone to false then failure, resulting in poor horn work. Cause of such failure is the speaker quality, can not be repaired, only replaced with new parts.

Note: Remember when washing to prevent the speakers get wet, the water as soon as possible with speakers found in dry air guns; try not to always long horn, horn contacts so easily lead to premature erosion; speaker fails to seek professional repair as much as possible technician to help, do not blindly replace the speaker, likely to cause unnecessary waste.