Switch LEDs are blinking irregularly

The switch lights are blinking irregularly, and some computers may not be able to access the server.

The switch is generally composed of the main circuit board and the power supply circuit board, the cause of this failure is generally the two parts of the problem. Component damage, poor substrate, hardware is not suitable and hardware updates due to compatibility problems caused by the type of circuit board is not suitable.

First of all to determine whether the main circuit board problem or the power supply circuit board problems. Starting from the power part of the check, you can use the universal table in the main circuit board to remove the load of the power test. Test metrics if it is not normal, try to replace the power supply, the front of the switch if the LED is back to normal, and all the computers connected to the switch can also be normal access to each other, it shows that the power supply circuit board problems. If the above method can not eliminate the fault, the problem should be on the main circuit board.