There is no sound or sound in the intercom?

If there is no sound when using the intercom, or the sound is very small, you should first check whether the battery voltage is sufficient. If the battery is normal, check the receiving frequency of the receiver and other intercom. Essence If there is no problem with the above inspections, then it may be that the parts of the intercom are faulty, including:

1. Speaker;

2. The horn external socket;

3. Coder and potentiometer;

4. The contact situation between the soft circuit plug and the motherboard socket;

5. The contact between antenna and antenna;

If you are a problem with the above components, you need to replace the place where specialized intercom or small appliances are required to replace it in time.