Nowadays, the use of Bluetooth speakers is very wide, many people will buy Bluetooth speakers, because Bluetooth speakers are more convenient, so do you know what is the repair method of Bluetooth speakers? Here is what I have organized for you to repair the Bluetooth speaker is what the relevant content, I hope you useful!
Bluetooth speaker repair method
Failure of a power supply failure
The power supply failure phenomenon generally appears in the transformer and rectifier circuit, which failure phenomenon has a short-circuit transformer, fuse break, rectifier breakdown, etc., the fault manifested itself in the stereo sound or a big acoustic sound, the fault phenomenon of the transformer is the most serious, the most serious is the transformer, the most serious is the transformer, the most serious is the transformer, the most serious is the transformer, the most serious is the transformer, the most serious is the transformer. In these fault phenomena, the most serious is the transformer short circuit, because it will directly affect the transformer temperature, so that its temperature rises until burned or triggered the box fire.
Solution: This situation should immediately turn off the speaker power, check the transformer is good or bad, if the case of damage, then replace the transformer of the same type can be. Rectifier damage can also directly find the same type of replacement. Blown fuses are much better, replace one can.
Detection of ideas: first disconnect the positive and negative power outputs, measured transformer secondary output AC12V normal, respectively, check D1 ~ D4 is also normal, no short-circuit breakdown, disconnection and other phenomena. Following the measurement of the C36 voltage +15V normal, while the measurement of the C37 voltage is -10 ~ 15V swing between the two ends of the observation found c37 a pin de-welded, welded back to the power supply input and try to machine, the machine back to normal.
Trouble two, amplifier failure
Amplifier failure is generally reflected in the AC sound, no sound, only one channel sound, noise, etc., the location of the amplifier in the speaker behind the metal backplane, just to confirm whether the amplifier failure can be. If the amplifier block is out of order, the temperature will rise quickly after the power on, so the metal back plate will also be very hot, even hot.
Solution: Usually, when damage to the amplifier is found, simply replacing an amplifier will solve such a faulty problem.
Trouble three, the speaker sound is not normal
1, the stereo appeared no sound, or appear "Bu Bu" abnormal sound, are not normal speaker sound performance, then how to repair it?
Solution: First of all, you need to dismantle the box to see if the box is leaking, check whether the components are installed securely. If there is no degumming and broken leaks, it should be maintained and handled in a timely manner.
How to buy Bluetooth speakers
Compatibility
Although the compatibility of Bluetooth speakers is basically 100% support for existing Bluetooth devices, you should check whether your playback device supports Bluetooth before buying.
Transmission distance
The transmission distance of Bluetooth speakers is also a matter of concern. The transmission distance of Bluetooth speakers has nothing to do with the Bluetooth version, but mainly depends on the advanced degree of the technology. powerClass2 has a standard transmission distance of 10 meters; while the upgraded powerClass1 will enhance the transmission distance to 100 meters and provide Hi-Fi stereo effect. Generally speaking, the distance between the cell phone and the Bluetooth speaker will not be too far, the more secure transmission distance is about 10 meters or less. All Bluetooth speakers on the market are up to the 10-meter standard.
Version
Consumers purchasing Bluetooth speakers will often see Bluetooth 1.1, 1.2, 2.0, 2.1, 3.0, 4.0 and other numbers, which represent the different versions, but also represent the Bluetooth speaker's ability to resist interference. 2.0 was the most popular in 2012, 3.0 is the new mainstream, 4.0 has just been launched shortly. The Bluetooth version is different, which is related to the reception of Bluetooth. The different versions of Bluetooth are related to the quality of the received signal. The newer versions emphasize the ability to overcome noise and interference. The newer versions are backward compatible, so consumers should evaluate price and requirements when purchasing.
Built-in battery
Bluetooth digital speakers have a built-in battery, making them truly wireless. The good and bad of the built-in battery directly determines the playback time and service life of the Bluetooth digital speakers. Please inquire carefully about the actual playback time and repeated charging decay times before purchasing. It is recommended that consumers choose Bluetooth Bluetooth speakers as much as possible to choose polymer lithium batteries, without the risk of explosion.
Battery types:
1) Polymer batteries
Advantages: Safe and efficient, no risk of explosion in soft pack.
Disadvantages: a variety of types, pure cobalt (good) and pure manganese (poor) polymer battery price difference of several times.
2) 18650 batteries
Advantages: better performance, charge and discharge can reach the top level (mostly used in laptop batteries), explosion-proof protection
Disadvantages: more dismantled batteries and old batteries. The same 18650 battery good and bad price difference of 5-10 times
3) Aluminum shell batteries
Advantages: the price is very cheap
Disadvantages: poor performance. There are no explosion-proof measures, the consequences of an explosion are unimaginable.
Battery protection plate:
1) The battery protection plate of miscellaneous batteries is poor in charging and discharging protection, and is unstable and prone to damage the battery cells and electronic devices.
2) Unstable current output not only affects the sound quality, but also causes a lot of current sound.
A good quality battery can still reach 80% of its initial capacity after 500 charge/discharge cycles. A poor quality battery will not even reach 50% of its initial capacity after 100 charge/discharge cycles.
Features of Bluetooth speakers
1, widely used
Bluetooth technology specifications are globally harmonized, cell phones, PDAs, wireless headsets, laptop computers, automobiles, medical devices, computer peripherals, and other devices, as long as they have Bluetooth adapters, can easily connect to the Bluetooth device for data transfer or voice communication. communication, widely popularized, good compatibility.
2, easy to operate
Bluetooth technology is an instant technology, it does not require a fixed infrastructure, and easy to install and set up, do not need a cable to realize the connection, it is very easy to use, just simply complete the pairing can be put into use, the operation of a lower threshold.
3, faster transmission speed
Compared to other methods such as infrared, Bluetooth transmission protocols have a clear advantage in speed, Bluetooth 4.0 theoretical maximum speed of 24Mbps, faster speeds to ensure higher sound quality, so that it has enough capacity to carry a higher bit rate of music.
4. Transmission distance is moderate
Bluetooth's transmission distance is generally within 10 meters, just the size of a room, and can transmit data through walls, which is ideal for home environments.
While there are many advantages to Bluetooth, the fact that the Bluetooth protocol, like other 2.4G devices, uses this band of signals makes it difficult to avoid signal interference. In addition, the Bluetooth protocol is not a free technology, any use of this technology manufacturers have to pay a royalty to the organization, and this part of the fee will also be reflected in the cost of Bluetooth audio equipment in 2012, the price is still higher than ordinary products.