Today, almost every passenger car is equipped with a radio tape recorder. The music coming from the speakers diversifies the monotonous driving, improves the mood, helps to pass the time, idle in traffic jams. If the car radio is out of order, first you need to determine the cause of the malfunction and only then proceed with the repair.
Necessary
- - soldering iron
- - tin
- - schemes
- - set of screwdrivers
- - voltage check indicator
Instructions
Step 1
If the receiver stops turning on, check if the supply voltage is present, if the fuses, protective diodes, sensors and stabilizer are working. If you find a defective item, repair or replace it.
Step 2
If the backlight on the removable panel of the audio device does not work, check the serviceability of the lamps and the continuity of their power supply circuit, the reliability of the connections directly in the connector of the removable element and eliminate the malfunction.
Step 3
When no sound is reproduced in all modes, a possible cause of breakdown may be a chip malfunction. First, check the voltage at the output of the audio signal and in other parts of the circuit. If voltage is applied, but no sounds are heard, it will be necessary to solder the microcircuit. Perform work with a special soldering iron - as carefully and accurately as possible. Be guided by the diagram located in the manual for the car radio.
Step 4
If the sensitivity of the AM tuner is not high enough, check the serviceability of the bandpass filters, diode assembly and the presence of signals on the control modules of the tuner. Having accurately established the nature of the malfunction, you can quickly fix the car radio. If the sensitivity of the FM tuner is low, it is necessary to additionally check the health of the elements at the output of the transistor and adjacent circuits.
Step 5
If the discs do not play, then the probable cause of the breakdown may be malfunctions in the operation of the audio signal switching unit or the processing unit. But before you start soldering the microcircuits, check the integrity of the connector of the connection between the CD and the radio, the reliability of this connection.
