Ask the question of car radio, car radio sometimes doesn t work well, why is that?

Find a place to repair the car and let the electrician test it to see if there is a problem with the line, if the line is fine, it is a problem with the radio and the need for professionals to check and repair. You can first see if the insurance is burned, and then see if there is a problem with the power amplifier and speaker line.

If the battery is dismantled and the car is powered off, the audio must be decoded.

The common failures in our vehicle tests that year are as follows:

1.The power supply is damaged, as long as the volume of the three-terminal regulator block is relatively large, but it lacks fixation, and the solder joint is vibrated off in the vibration generated by the vehicle. The phenomenon is that there is no display when the machine is turned on;

2.The overheating and burning of the power amplifier block is mainly due to the user's long-term high-power use that causes the chip to overheat and burn out, because the machine is in a closed environment, with poor heat dissipation, which is a very common failure. Especially for machines with higher power, such as machines with a four-channel output of 35W per channel, the common phenomenon is that there is a display when it is turned on, but there is no sound;

Speakers and connection lines are generally rarely faulty, but I think Lai Mei Jiaxin's analysis is also very reasonable, so you need to contact the car manufacturer, they will tell you the most accurate information, and don't blindly repair, audio, especially the host is still very sophisticated mechanical and electronic laser products, generally people in small places dare not repair, large places are darker directly for you to break and then suggest you to replace, it is possible.

Because the FM signal travels in a straight line, it becomes weaker when propagating into a valley, between two tall buildings, or when encountering other obstacles. When cars pass through these areas, they sometimes pick up noises. Each car has an antenna that receives signals, and it may be an antenna failure, or a fault of the line and more.

Because the FM signal travels in a straight line, it becomes weaker when propagating into a valley, between two tall buildings, or when encountering other obstacles. When cars pass through these areas, they sometimes pick up noises.

There is a loose core of the inductor coil on the circuit board, generally the power lead comes in series and has an inductance coil, usually almost all the power falls on this inductance coil when the machine is sleeping, if the core is loose, it is easy to produce noise. The effect of a car radio is only related to the strength of the received signal in the case of a certain amount of car hardware. Remote areas, high speeds, shielded areas, etc., will have an impact on the radio signal.

Sometimes the poor radio may be related to the signal received by the antenna, the premise is that there is no problem with your original car horn, the received signal must be interfered with! For example, your location is relatively remote, and you have strong electronic devices nearby, etc., which will interfere with the radio signal! One is that the signal may not be good, the second is that the capsule needs to be replaced, the third is to check whether the radio equipment is damaged, and the fourth is to check the antenna on the outside, or pretend to be a signal amplifier.

Secondly, it is the role of the automobile engine, the engine will produce magnetic fields and electromagnetic waves in high-speed operation, which will also interfere with the normal emission of radio waves, and the effect of being used at the end (the effect of radio receiving radio waves) will be greatly reduced! There is also a murmur. The signal and effect may be greatly discounted, in this case, adding an additional signal amplifier has no great effect, so it is recommended that you replace the radio capsule after checking that there is no problem with the antenna, and the result is unexpectedly good.

The quality is average, in the absence of an outer receiver, it is normal to have a temporary strike that is far away and seriously damaged, and you can go to the 4S shop to repair it.

It is very likely that the wire contact is poor or the signal reception is not good, and there is also dust falling inside, the parts are damaged, and the time is relatively long.

Reasons for a bad signal. Sometimes when the car is driven to a remote place, the signal will be intermittent, resulting in a poor radio effect.

The effect of the radio should still look at the road conditions on which you are driving, because this is connected according to the frequency, if it is in some remote places, there is no signal will also cause their effect is not very good.

Because the places where the car walks are some places with bad signals, these places receive very little signal, almost nothing.

Hello, nice to meet you. Car radio common service malfunction 1 The radio signal is weak, or even cannot receive the signal. Check if the antenna is dialed out or dropped.

Check that the antenna plug is securely plugged in. Check whether the antenna is short-circuited or open-circuited. 2. If the signal is weak, but you can listen, you can use the manual selection table or accept the receiving selection table, or turn on the remote acceptance (DX) mode, and then automatically select the station again.

3. If the selected radio station is noisy and the storage content disappears when the ignition switch is turned off, the radio power cord should be checked for long-term power, otherwise the fault of the relevant circuit should be checked.

Reason: 1. The audio output line (the cable connected to the speaker) is broken.

Solution: Find the audio cable and replace it with a new one.

2. The owner pressed the mute button on the radio.

Workaround: Press the radio mute button or volume button again to confirm.

Summary. Pro-<>

What's wrong with the radio?

Radio issues.

Pro-<> "What's wrong with the radio?"

How can this kind of radio be connected to Bluetooth.

Dear, what brand of radio do you have?

Trinity. Pro-<>

Do you want to ask how to connect Sany radio to Bluetooth?

Right. Comes with Bluetooth mode.

Uh-huh. 1.Power on the Sany radio and set it to Bluetooth mode.

The way to do this is to press the "mode" button on the radio so that it will be displayed as the Bluetooth tunnel mode. 2.Turn on the Bluetooth function of the Bluetooth device you wish to connect to (e.g., phone, tablet, etc.) and search for available devices.

3.If the Bluetooth device needs to enter the pairing password upgrade key, enter the default password "0000". 4.

Once the connection is successful, you will be able to **** and other sounds on your Bluetooth device and hear them through Trinity Radio. When in use, please make sure that the distance between the Bluetooth device and the radio is not more than 10 meters or so to ensure the sound quality and connection stability.

It's important to note that before you connect for the first time, make sure you understand how your Bluetooth device works and follow the instructions. At the same time, if there is a connection problem, you can try restarting the device or resetting the Bluetooth settings to fix the problem.

Categories: Entertainment & Leisure.

Problem description: What is a secondary inverter radio? BCL radio? What is the difference between a digital coordinated radio and a digital display radio? Thanks

Analysis: SW Dual Conversion Technology in Shortwave Radio

Shortwave radios originally used direct amplification lines, and since the 50s, a frequency conversion line has been applied, which is commonly known as superheterodyne radios. In order to further improve the sensitivity, selectivity and anti-interference ability of radio receivers, scientists have developed multi-frequency conversion technology, of course, it was first applied in the field of radio communication, and later transplanted to advanced radios, thus greatly improving the performance indicators of short-wave radios.

Portable high-collapse sensitivity shortwave radios generally use secondary frequency conversion, while more advanced professional shortwave communication receivers even use 3rd or 4th frequency conversion technology.

BCL (Broadcast Lisener) is the "radio listener". And this radio listener is not just listening to the radio in the ordinary sense. Or it's not bad to call them "radio lovers".

In fact, each of us has listened to the radio and listened to the radio broadcast, but this is only the form of BCL in a broad sense, and the real BCL emphasizes that the information exchange between the listener and the radio station, especially the link of communication and feedback is essential. The communication and feedback session consists of two aspects:

1. Listen to the feedback from the townspeople to the radio. The commonly used methods are: 1. Text letter (letter).2. E-mail3. Online *** format (voice) file.

2. The station's confirmation of the listener. The common methods are: 1. Exquisite QSL cards. 2. Certificate of merit from loyal listeners. 3. Obtain a certificate of certain qualifications.

For BCL practitioners, the first step is the means we have to use, and the second step is what we want to achieve.

To get involved in the BCL field, you must first have a multi-band radio with good performance, or a radio. BCL radio is a high-performance radio receiver specially designed for BCL (radio enthusiasts).

The digital display curved radio only uses numbers to display the current frequency band, but the tuning of the frequency is still achieved by changing the size of the resistor; Digital coordinated radios use chips to locate frequencies.

The car radio is very good, at least it can't be compared with the radio under 100 yuan sold on the market, anyway, my radio is like this, I can receive twenty or thirty sets casually, but it is interfered by the xenon lamp I changed, and it is almost impossible to listen to it when the high beam is turned on at night.