I have few various ubiquiti antenna and radio but some are got malfunctioning now like the Lite AP 120(LBE-5AC-120) degree sectored antenna. I have three of them and only one is working. I want to check whether I can repair these antenna, how complex is it and what tools are required.
In one of the malfunctioning Lite AP, its both LEDs are working and reset of the antenna also works but inspecting the LEDs being stopped momentarily when the reset happens. But I connect to it via web/ethernet. My laptop cannot connect to it via the ethernet cable on 192.168.1.20.
Below are some pictures of the dissembled Lite AP 120(LBE-5AC-120)antenna and radio PCB board.
After bit of research I have come to know that if the power led does not turn on then mostly both the bridge rectifier IC(MB1S) or/and voltage regulator IC must be checked and replaced. The following PCB board picture shows the location of these ICs.
After this the power indicator LED should be turned on.
If the ethernet indicator LED is not turned on or is not blinking then you may need to replace the LAN IC AR8035. This chip is shown below.
On the PCB board the location of this chip is shown below.
After replacement when you plug in the Ethernet cable, the Ethernet LED should be blinking.
In
my case, the ethernet LED turns on when the reset button is pressed but
it is not blinking when I insert the ethernet cable in and out of the
port. It could be that the LAN chip is malfunctioning. I have repaired soldering iron and so I can work on this Ubiquiti PCB board. That much for this note.
