There are several types of traffic signal failures:
The traffic lights at the intersection are off
The reasons for the composition are roughly as follows: the power failure is always safely burned (caused by short circuit), the main version is burned (lightning strike), etc.
Fault clearing: Power on and replace the safe wire together with the circuit to repair the main board.
One-way traffic lights do not light up
The reasons for the composition are roughly as follows: the safety wire is burned (the safety wire is aging) the open circuit (caused by a short circuit) the transformer is burned (short circuit or aging), etc.
Fault clearing: Replace the safe wire and repair the circuit together with the repair circuit, replace the cable, repair the circuit and replace the transformer.
A single traffic light does not light up
The reasons for the composition are roughly: open circuit (short circuit or aging of wire contacts) transformer burning (short circuit or aging), etc.
Fault clearing: Check the circuit and replace the wire, check the circuit and replace the transformer.
The incident forms a traffic signal light damage category
Depending on the damage situation, repairs that can be repaired, and replacements that should be replaced.
It can be on when it is energized alone, and when it is connected to the traffic signal control machine, the two lights will be on or flashing at the same time
