Causes of car radio not working

Causes of radio in car stopped working

1 How to find a car radio malfunction and repair it yourself?
2 The radio does not turn on: it works, in the car, although there is power to it, why, reasons, stopped, turns off, buttons, sensor, display 2.1 Buttons do not work
2.2 Sensor or display does not work

3 Do-it-yourself car radio repair: the radio does not read the flash drive, turns off when the volume is increased

4 Detailed guide to repairing car radios at home

5 What to do when the radio in the car does not turn on although there is power to it

6 The radio has turned off and won’t turn on

7 Car radio malfunction: looking for reasons

8 Reasons for the car radio not turning on

In total, nine main problems can be identified that will answer the question: Why does the radio in the car not work, namely:

It doesn't even turn on. The main cause of this failure is lack of power. To check it, you need to use a tester. If it turns out that everything is in order with it, then it is necessary to carry out a full diagnosis of the car radio.
No or intermittent backlight on the control panel. This indicates problems with the LEDs or light bulbs or in the power circuit.
Why don't the buttons on the radio work? There are several possibilities for a malfunction to occur, namely: a fuse or chip has broken, or the contacts or buttons have simply become clogged. This is possible if you often use polish, or spill some drink on the car radio. Also, over time, the buttons become clogged with dust.
Disk reading problems. It may be due to damage to the laser head or shock absorbers of the radio. They can occur due to the car shaking, for example when driving on a rocky road.
If the inscription “Please code” is displayed, it means that the settings have failed and you are on your way to a service center, where they will enter the code for the standard car radio.
Why doesn't the flash drive work in the radio? First of all, it is important to make sure that the indicator light on the drive is on. This indicates that the USB input is working properly. After checking that the amount of memory on it is suitable for the car radio, older devices may not read flash drives with a large amount of memory. Next, you need to check its operation on another device or insert another USB drive into the unit, with which everything is absolutely fine. If the flash drive is in working condition, then you need to look for the problem in the music unit. Also, the software very often crashes, which is why the radio requires flashing.
I can't insert or remove a disc. Very often this problem lies in the disk loading motor, or rather in the pressure roller, power supply, control and sensors.
Why did the radio, or rather the radio, stop working? With this malfunction, the cause may lie in the chip, tuner or antenna. There are cases when the tuner does not have surge protection, and either the entire device or just the radio may stop working.
If the car radio does not want to read the disc, then you need to pay attention to the motor that rotates it, as well as the laser head and control board.

Doesn't turn on

One of the reasons why the tape recorder in the car does not work, although there is power, is a blown fuse. This can happen due to overload caused by listening to music at high volume for a long time or a short circuit in the speaker wiring. As a result of this malfunction, the radio refuses to turn on.

To fix the problem, remove the device and remove the fuse. Its rated current is 5 or 7.5 A. Since it is impossible to accurately determine by appearance whether the fuse is intact, the serviceability of this part is checked using a tester or multimeter.

The next reason why the radio does not turn on is a break or chafing of the power wires. The contact in the standard block could also come loose due to contamination or loose connectors. To fix this problem, you should carefully inspect the wiring and connectors. Particular attention is paid to the connection of the receiver to ground or the car body. Broken wires should be replaced and connected as securely as possible.

Incorrect connection also leads to the fact that the radio in the car does not turn on. To resolve this problem, you should carefully inspect the wiring. You can identify the wires coming from the battery using a test lamp. Wiring to speakers is often done with two-core cables.

Read more: Idle speed sensor VAZ 2114 signs of malfunction

To make the correct connection, the positive pole of the battery power is connected to the red and yellow wires of the car radio, and the negative pole to the black wire. The blue wire must be connected to an active antenna or amplifier. If the positive wire from the battery is connected to the red wire, and the yellow wire is connected to the ignition switch, then the audio device will not turn on until the key is turned.

Another common reason why the radio stops working is an internal malfunction of the audio device. The amplifier and controller microcircuits burn out due to voltage surges in the on-board network caused by a generator malfunction. Sometimes the radio display lights up but there is no sound. In this case, the receiver must be replaced or repaired. The operation of the generator is checked at a car service center.

Diagnostics

First of all, you need to use a tester to check the necessary wires and contacts. Next, check the radio for damage and defects. Then look at the main details of the part of the device that does not work, check whether the contacts are clogged with dust and dirt. And lastly, make sure that the board is not burned out.

Turns off during operation

The main reason that the buttons stop working or stick is, as a rule, dust and dirt getting under them or accidentally spilling soft drinks on the panel. As a result, the radio components overheat and the buttons fail to respond to commands when pressed. This can also happen for purely mechanical reasons.

That is, due to a broken solder contact. If a malfunction occurs such as sticking buttons of a car player, it is recommended to disassemble the top panel and clean the board and the connection points of the buttons with it, and also check the contacts of all buttons with a multimeter.

It happens that the radio turns off during operation. This problem can be caused by a poor or unreliable connection in the power circuit, which occasionally becomes loose when driving fast on rough roads, resulting in an unexpected shutdown. To fix the problem, you need to connect the power cables of the car radio more securely. Connecting the negative wire of the car radio to the car body is carried out as follows:

Find the stud closest to the radio
Clean it from dirt and paint.
Take a piece of wire with a terminal that has a hole of a suitable diameter.
Connect one end to the negative terminal of the radio
Place the terminal onto the stud and screw it securely.

Unreliable mounting of the car radio on the dashboard also leads to malfunctions, including shutdown. Another reason for sudden shutdown is the protective timer built into the radio. It is used to avoid draining the car's battery if the device is accidentally left on without pressing any buttons for a specified period of time. To deal with this problem, you just need to turn on the radio again.

Why doesn't the radio respond to buttons?

There are several reasons why the radio does not work. These include the following malfunctions:

Fuse blown. This happens due to overloads caused by long-term operation of the device under high load conditions. Fixing this problem is not difficult. You need to remove the device and remove the fuse. The fault is detected using a multimeter. If the radio is connected through a mounting block, its fuses also need to be checked. If there is a breakdown, the parts are replaced.
Violation of the integrity of the wires. If the radio in your car does not turn on, you need to inspect the cables for damage. Particular attention is paid to connecting the receiver to ground. Damaged wires are replaced and connections are made more reliable. The connector terminals are thoroughly cleaned of dirt and crimped.
Incorrect connection. This problem can also cause the radio to not turn on. Repairs begin with an inspection of the wiring. The cables leading to the battery are looked for using a test lamp. The wiring has a two-wire structure. To properly connect the battery, the positive pole is connected to the yellow and red wires, the negative pole to the black wire. The blue cable is connected to the antenna and amplifier.
Indoor module malfunction. When voltage drops in the on-board network, the microcircuits burn out, causing the device to stop working. Sometimes only sound is missing. If such a malfunction occurs, the receiver must be replaced. The functionality of the generator is checked at a car service center.

Buttons don't work

Find the stud closest to the radio
Clean it from dirt and paint.
Take a piece of wire with a terminal that has a hole of a suitable diameter.
Connect one end to the negative terminal of the radio
Place the terminal onto the stud and screw it securely.

This malfunction is caused by poor contact or careless installation of the front removable panel of the head unit. The buttons do not work due to natural wear and tear caused by active use of the device. This problem will appear the sooner the harder you press the buttons. If the volume control encoder is worn out, control will not occur correctly.

To eliminate this problem, you should carefully remove the front panel and wipe the contacts on it and the radio itself, and then put it back in place. When installing, make sure that the panel fits tightly and evenly into place, and that the latch clicks into place. To replace worn or sunken buttons, you can take the panel to an electronics workshop.

Turns off during operation

If the radio turns off during use, the cause should be sought in the following faults:

Disconnecting contacts in the power circuit. This happens when driving on uneven roads. If the radio suddenly stops working, you need to connect the power wires more securely. You need to find the pin closest to the audio device and clean it. A part of the wire with a terminal of a suitable size is connected to the negative terminal of the radio. The terminal is thrown onto the stud and securely fastened.
The audio device is not properly secured to the dashboard. If the radio often turns off, you need to check it for this malfunction.
Timer triggered. This part of the radio helps to avoid draining the car battery when the audio device is used for a long time. The car radio needs to be rebooted, this will help cope with the problem caused by the timer.

Why the radio does not work: possible reasons and solutions

( 1 2.00 out of 5) Loading... The board has burned out.
When the radio and cigarette lighter break down, you most often do not need to contact a service center, you can fix everything yourself. To do this, you just need to decide why the cigarette lighter and radio are not working, and how to fix this problem.

Basic malfunctions of car radios

In total, nine main problems can be identified that will answer the question: Why does the radio in the car not work, namely:

It doesn't even turn on. The main cause of this failure is lack of power. To check it, you need to use a tester. If it turns out that everything is in order with it, then it is necessary to carry out a full diagnosis of the car radio.
No or intermittent backlight on the control panel. This indicates problems with the LEDs or light bulbs or in the power circuit.
Why don't the buttons on the radio work? There are several possibilities for a malfunction to occur, namely: a fuse or chip has broken, or the contacts or buttons have simply become clogged. This is possible if you often use polish, or spill some drink on the car radio. Also, over time, the buttons become clogged with dust.
Disk reading problems. It may be due to damage to the laser head or shock absorbers of the radio. They can occur due to the car shaking, for example when driving on a rocky road.
If the inscription “Please code” is displayed, it means that the settings have failed and you are on your way to a service center, where they will enter the code for the standard car radio.
Why doesn't the flash drive work in the radio? First of all, it is important to make sure that the indicator light on the drive is on. This indicates that the USB input is working properly. After checking that the amount of memory on it is suitable for the car radio, older devices may not read flash drives with a large amount of memory. Next, you need to check its operation on another device or insert another USB drive into the unit, with which everything is absolutely fine. If the flash drive is in working condition, then you need to look for the problem in the music unit. Also, the software very often crashes, which is why the radio requires flashing.
I can't insert or remove a disc. Very often this problem lies in the disk loading motor, or rather in the pressure roller, power supply, control and sensors.
Why did the radio, or rather the radio, stop working? With this malfunction, the cause may lie in the chip, tuner or antenna. There are cases when the tuner does not have surge protection, and either the entire device or just the radio may stop working.
If the car radio does not want to read the disc, then you need to pay attention to the motor that rotates it, as well as the laser head and control board.

How to fix a cigarette lighter

It’s good that fixing a cigarette lighter is often not difficult. Let's look at the features of the repair using the VAZ 2114 as an example. Its sequence is shown in the photo. First of all, you need to check the functionality of the fuses and the device itself. The easiest failure is considered to be a blown fuse. To make sure that it is the cigarette lighter that is not working, you need to disassemble it to the back of the socket and connect a light bulb to it. If it lights up after turning on the ignition, then repairing it cannot be avoided.

For this you will need: pliers and a soldering iron. First you need to remove all the nuts and separate the plastic and metal parts. Then disconnect the glands and replace the plate. At the end, you need to put everything back together and check its functionality.

Source: https://1avtozvuk.ru/neispravnosti/pochemu-ne-rabotaet-magnitola

Backlight repair

This method is suitable if the radio display is blinking or the backlight has stopped working altogether.

Keys for removing the radio

To solve the problem with our own hands, we will need to resort to the method described in the list below:

First, let's take a special tool for dismantling the radio to pull it out of the panel. You can also use knitting needles or something with similar characteristics.
We take out the radio and take the ammeter in our hands. We check that all wires are in good condition (the voltage on them should be about 6V). If you notice a strong voltage fluctuation on one or more wires, then we already know where the problem lies.
We replace the defective wire and check the operation. If nothing has changed, then we follow the list further.
We disassemble the front part to get to the diode that blinks. Next, we dismantle it and replace it with a new one.
Next we need a soldering iron. You will need it to desolder the standard backlight of the device, since the problem lies there if you have reached this stage.
From the new lamp we will need to get one resistor and two LEDs.
The next step is to grind, as we need them to fit into the required holes. After they are placed in their inputs, we insert them and connect the diode to the resistor.

Unraveling the radio
Important: make sure that you maintain the polarity to avoid malfunctions. Connect where the lamp was installed.

Now we have to put everything back together the way it was originally. At the end we connect the power and admire it.

Now you know how to repair a flashing radio that constantly distracts you from the road or listening to music. Or you just don't want the problem to go any further. I hope the article was useful to you and answered all your questions. If your JVC, Kenwood, Sony or any other radio is blinking, the detailed instructions in the article should have solved the problem.

Car radio malfunction: looking for reasons

Car radio malfunction

Malfunction of the car radio, which has recently been almost the leader in the list of the most common problems, is associated with interruptions or lack of playback when the car radio reads various discs. Malfunctions of car radios of this nature are explained, first of all, by defects in the CD mechanism itself, inside of which plastic or metal elements are placed.

Why doesn't the car radio read the flash drive?

Causes

So:

Both plastic and metal tend to “get tired”. Thus, all mechanical parts made of these materials are sooner or later subject to wear.

Car radio defects

Another reason for car radio failure is dirt. Over time, dust and dirt accumulate between the parts due to the operation of the car radio in extremely harsh conditions. In this case, failure of the optical part or various mechanical parts becomes common.

What to do when the radio in the car does not turn on although there is power to it

A person who spends a lot of time on the road knows that the radio is an important part of the car. There are many types of such equipment, but any model is prone to breakdowns. Car owners often wonder what to do if the radio does not turn on.

The sensor or display does not work

If the display on the radio does not work, you need to look for internal faults. The cable connecting the screen to the main modules is often disconnected. Only a specialist can fix the problem. You should not disassemble the device yourself, as this can make the situation worse. Due to the displacement of the cable, the operation of the sensor may be disrupted.

If the sensor on the radio does not work, you can use the remote control to perform the necessary operations. Incorrect installation of the panel may also cause the touchscreen or screen to malfunction. Testing the device in a service center will help you understand why the radio does not work.

No sound or noise

This problem can be caused by several reasons, the most common of which are:

No signal. In this case, the sound disappears or loses volume. Checking the high-level pulse supplied by the fourth pin of IC901 helps solve the problem. If there is no signal, the controller must be replaced. If the sound disappears when you start the engine and adjust the volume, you need to inspect the amplifier contacts.
No voltage at the base. In this case, the sound fades or disappears completely when you try to increase the volume. This problem is determined by checking the bases with a voltmeter. If the tested parameter is zero, the transistors must be replaced.
The Mute button is broken. The change in sound quality in this case is due to a controller malfunction. If you have problems with volume control, you need to check transistor Q802.
Amplifier chips burn out. If there is no sound, you need to inspect all the cables connecting this module to the tape recorder. Repair involves replacing capacitors and microcircuits.

Does not read the disk, flash drive or the disk is stuck

When using the car radio, the following problems with reading information may occur:

Inability to recognize the disc. Occurs when the laser head is damaged due to vehicle shaking. Replacing this part helps solve the problem.
Inability to read flash drive. First of all, you need to check whether there is a light indication on the drive. If it is present, the connector is working. After this, check whether the type of flash drive matches the parameters of the radio. Older devices may not be able to read large storage devices. Problems also arise when the software is damaged. They can be solved by flashing the radio.
Disc jam. Associated with a breakdown of the motor, pressure roller or sensors. It is recommended to replace parts.

How to find a car radio malfunction and repair it yourself?

A car radio, like any other device or mechanism in a car, can fail. As practice shows, car radio repairs are usually carried out in the event of improper operation of the device or when malfunctions occur that are not related to use. In this article, we propose to familiarize yourself with the main causes and methods of eliminating audio system breakdowns.

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Working with the power connector

Using this connector, the device can be connected to power and an antenna. Of the 8 contacts on the block, only 4 are actually used.

For example, A4 is the power supply for volatile memory cells. When disconnected, the device returns to factory settings. A red wire is usually supplied here, which is connected to the battery through a fuse.

The antenna is connected to A5. Here's the blue wire. The current at this output is small, but if it is accidentally exceeded, then everything will burn out.

A7 is the yellow wire. It allows you to ensure that the entire sound system is turned on. Connects through a fuse to the ignition terminals.

Are you here

Many domestic car enthusiasts encountered a problem when the radio in their car stopped working. There are several reasons that create this situation. However, professional repair of the device itself is not always required. With the help of specialists, we will understand the main characteristic features of breakdowns and determine what to do in each of the described cases. Although you may have to buy new standard head units in Tyumen.

A study of thematic forums shows that if the radio in the car does not work, the reasons are divided into two main groups:

The device itself does not turn on or off;
the equipment does not play.

The most common malfunction is the inability to read discs inserted into the radio or their playback with glitches and periodic interruptions.

In this case, the problem often lies directly in the drive mechanism. It consists of many independent elements that are subject to wear during operation. It is enough to change the failed part, and the radio will become functional. You can do this work yourself or entrust it to repairmen.