Sound is silent or the sound is not normal? The reasons and solutions are here!
In May of this year, there were a lot of performances and concerts around the world! The only regret is that when watching the wonderful time, the sound suddenly has no sound or the sound is not normal... The reason why there is no sound in the sound Generally speaking, there are mainly the following reasons for the soundless sound: 1. Poor contact in the socket and poor signal line contact - check that the sound is energized and the signal lines are in good contact. 2. The most common fault of the power amplifier is the bad capacitor or the burnout tube. Here we have the problem of improper operation, but the main reason is that the device itself is unstable. 3. Some amplifiers will have a fault with no sound in one channel, and the problem is still a circuit problem inside. 4. Other malfunctions of the power amplifier, such as poor contact of the power amplifier volume potentiometer, unbalanced left and right channels, too frequent protection functions, poor contact of the rear panel work transfer switch, and signal sockets. In short, the power amplifier is more likely to occur in the sound system. An electrical device that fails. 5. The most common speaker fault is the speaker problem. The most common fault in a sound system is actually burning the speaker. This is a human factor, but most of them are quality problems of the speaker itself. 6. Another common fault of the speaker is that the wiring port is aging and the contact is poor. Especially the frequently moving speaker is prone to such a fault. The sound problem of the sound is subdivided, there are no sound, sometimes no, the volume is small, the sound is abnormal, etc. The reasons for the formation are different, and the solution is different. Therefore, we must specifically check according to the actual situation, and Solve it. First, silent 1. Speaker disconnect or crossover is abnormal After the speaker cable is broken, the speaker unit has no excitation voltage, which will cause a silent failure. Although the frequency divider is not easy to break, but the lead joint may be desoldered, the crossover capacitor short circuit, and the like. 2. Voice coil The multi-meter R×1 file can be used to measure the speaker lead wire soldering piece. If the resistance value is ∞, the seal of the lead wires at both ends of the voice coil can be scraped off with a small knife to expose the bare copper wire and then measured. If it is still not available, the voice coil is broken. Line; if it is through but there is a "tick" sound, it means that the voice coil lead is broken, the solder can be soldered on the thread, and another enameled wire similar to the voice coil winding can be welded. 3. Speaker lead is broken Due to the frequent vibration of the speaker cone, the braided wire is easily broken, and sometimes the wire is broken, but the cotton core remains connected. Such braided wires are not readily available and can be replaced with slightly longer flexible wires. 4. Use the multimeter R×1 file to measure the speaker lead. If the resistance value is close to 0Ω and there is no “click†sound, it means the voice coil is burnt. Before replacing the voice coil, first remove the debris in the magnetic gap, then carefully put the new voice coil into the magnetic gap, and correct the voice coil. While listening to the sound, fix the upper and lower positions of the voice coil with super glue, and wait for the voice coil to be placed at the best. After the position, fill the gap between the voice coil and the paper cone to about half with super glue. Finally, seal the dust cover and put the speaker cone up. After one day, it can be used normally. Second, sometimes there is no sound 1. The speaker leads are bad, usually the sound coil lead is moldy or poorly welded. When the paper cone vibrates frequently, the break point is turned on and sometimes turned off, and when the irregular sound is formed, the fault does not sound. 2. The voice coil lead is broken or shorted 3. Poor contact of the power amplifier output jack or disconnection of the speaker input cable Third, the volume is small 1. The performance of the speaker is poor. The magnetic drop of the magnetic steel is affected by the magnetic properties of the permanent magnet, the quality of the paper cone and the quality of the assembly process. The ferromagnetic object can be touched with the magnetic steel, and the magnetic properties of the magnetic steel can be estimated according to the magnitude of the attraction. If the magnetic property is too weak, the speaker is replaced. 2. The magnetic core column is loose When the magnetic core of the speaker is loose, it will be sucked to one side by the magnetic conductive plate, so that the voice coil is squeezed to hinder the normal sound. The paper cone can be lightly pressed by hand. If it is not pressed, the voice coil may be pressed by the stem, and it can be used after being disassembled and re-adhered. 3. Frequency divider exception When there is a component in the crossover, the signal in the corresponding frequency band is blocked, and the speaker in the band has a volume glitch. It is important to check whether the crossover capacitor connected in parallel with the woofer is short-circuited, and whether the crossover inductor coil connected in parallel with the tweeter is short-circuited between layers. Fourth, the sound is abnormal Magnetic gap If debris enters the magnetic gap, the voice coil will rub against the debris when it vibrates, causing the sound to be hoarse. 2. Voice coil core The voice coil is not in the correct position and rubs against the core, causing the sound to be distorted. Correct the voice coil position or replace the voice coil during maintenance. 3. Paper cone rupture If the damaged area is large, the paper cone should be replaced, and the damaged area can be repaired with a slightly thin paper cone or other tough paper. 4. Poor cabinet Poor sealing of the cabinet or improper installation of the decorative mesh cover may cause cracking during playback. In addition, the case plate is too thin to cause resonance, and abnormal sound is also generated.
Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
Miniature Circuit Breaker,Electronics Miniature Circuits Breaker,Automatic Miniature Circuit Breaker,Mini Circuit Breaker,MCB Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjmotorstarter.com
So why is this sound happening with good sound? Today, I will share with you some reasons why the sound has no sound and how to check it out, in case of emergency.