Gate fence electronics dismantling -1- Main control and rx board

In this post some pictures of electronics in a 220 Volt gate controller to control 220 Volt motors.After many years of service this device was not working reliable anymore and i needed to replace it. This blogpost is also to document the old situation.

Top left you see a transformer top right are battery holders (not used) . In the middle of the picture you see the main controller board. Also you  can see a part of the antenna. However this remote control was not used.

The cable bundle on the right form a separate circuit with cables going to a light sensor for a lamp.

In this picture the mains to the control board is disconnected .(The wires where temporary placed in additional screw terminals connected to nothing to put the fence control temporary out of service).

Original the connection was to the left two connections where also the white wire on the left is connected. The white wire is to power a 433 MHz remote control switch box (bottom left). From this control box go wires to contacts on the main controller board to external contact to open and close the gate. Below a closeup of the control board after disassembling.

On the right is the connector for the receive module. Below some pictures of this module.

As already mentioned the control board is completely replaced with a new (different) board. I also removed the antenna and tested it with a vector network analyzer. You can see the bottom part of the antenna in the first picture of this post top right.
Results of antenna measurements will come in a next blogpost.