Solving common fault problems of broadcasting system

The campus broadcasting system works for a long time, and the indoor and outdoor equipment are connected. Once a thunderstorm occurs, the equipment is easily damaged by lightning. Long-term raining equipment may be damaged due to moisture leakage, so the failure rate of the campus broadcasting system is also relatively high. Therefore, it is necessary for us to master the troubleshooting of the campus broadcasting system. Let me talk about common problems and troubleshooting methods

1. No electricity

The performance is that the indicator light and the display are not bright, and there is no output on all channels.

Solution: Check whether the power line is connected to the fuse, whether the power line is broken or the fuse is in poor contact. If the fuse is burnt out, immediately check whether the rectifier bridge or electrolytic components of the power amplifier rectifier power supply are damaged, such as the rectifier diode or the bridge stack. Check the other components and the cable connected to the speaker for short circuits, and analyze the most fundamental cause of no power to avoid the recurrence of such failures.

2. Silent

For the reason that the campus broadcast system has no output failure, it can be divided into power supply part failure and relay failure of the protection circuit.

If it is the first fault, it usually shows the indicator light, the display is not bright, and there is no output on all channels. If this fault occurs, our solution: start up and check whether the fuse is blown, and whether the power switch contact has been burned out.

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