No matter what products will appear problem, so we at home watching movies or listening to music, suddenly the bugs, and this is the mood very bad things, today this problem simple to explain the reasons and solutions.

A silent,

1. The speaker wire is broken or abnormal frequency divider

Speaker wiring after fracture, the speaker unit without excitation voltage, will result in silent failure. Divider is not easy to break, but possible joint sealing off, frequency division lead capacitance short circuit fault, etc.

2. The voice coil is broken

Available multimeter R x 1 gear measuring speaker lead wire welding, if resistance is up, use a knife to the voice coil two ends of lead sealing paint scraping, measured again after exposing bare copper wire, if still not, is the voice coil internal bolt; If measuring up and has a sound "raise price", suggests that voice coil wire break, thread can be for solder, and the other with a close to voice coil winding of the enameled wire welding can be completed.

3. The speaker wire is broken

Due to the loudspeaker paper cone vibration frequency, the braided wire is easy broken, sometimes wire is broken, but cotton core is still keep connection. The braided wire is not easy to buy, can use soft wire instead of longer.

4. The voice coil burned

The speaker wire is measured with a multimeter R x 1 ", if the resistance is close to 0 Ω, and no "raise price", indicates the voice coil burned. Before you replace the voice coil, should remove impurities in the magnetic gap, and then carefully put new voice coil in the magnetic gap, rotary's pronunciation, listening while with super glue and fixed position of the voice coil and, after waiting for voice coil placed in the best position, use super glue to fill the clearance between the paper cone and voice coil to about half of the last seal dustproof cover, the loudspeaker paper cone up, place a day after can be normal use.

Second, sometimes no sound

1. The speaker wire

Usually voice coil wire mould broken or improper welding, paper cone vibration frequency, breakpoint and sometimes on, sometimes disconnected, the formation of irregular ring does not ring when the fault.

2. The voice coil lead wire break or short circuit.

3. The power amplifier output pin or poor contact amp input line break off.

Three, volume small,

1, poor contact, poor contact line socket. To check clear sound electricity, each line contact is good.

2, power amplifier is the most common fault bad or burning power amplifier tube, we used the problem with this, but most of the equipment itself is not stable.

3, some power amplifier will occur fault, a channel no sound or inside circuit problems.

4 what power amplifier the volume potentiometer, as for the other faults and bad contact, imbalance of left and right channels and protection function is too frequent, rear panel switch contact is bad, and the problem of signal pin, in short, the power amplifier is now in the sound system is easier to failure of a kind of electrical equipment.

Part 5, speakers fault is, of course, the speaker of the most common questions, can say a sound system in the most prone to failure is to burn the horn.

6, speakers of another common faults is connection port aging, poor contact, especially frequently flow speakers are prone to the failure.