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| How to repair the water intercom | | Add Time: 2019.05.24 | First disassemble the machine, disassemble all external parts one by one (such as buttons, PTT glue, light guide column, etc.), carefully clean the circuit board with absolute alcohol or special wash water, dry it, and clean the circuit with small tools. Stains on the board;
Then, it is soaked in absolute alcohol, and it can be cleaned by ultrasonic cleaning machine. After it is taken out, it is blown dry with a hair dryer (note that the temperature is not too high), and the board is inspected for damage. If there is a broken wire, use a thin enameled wire. Connect, use the three-meter to measure the resistance of the positive and negative terminals of the power supply, can not be short-circuited or open circuit (power, view current, normal is about 40MA, not less than (1000MA) when launching;
Check if the wireless port is dirty, clean it if it is dirty, and if there are other faults, follow the routine. Water inlets with severe corrosion to the circuit are generally not repairable, so the machine should be disposed of in time after entering the water.
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