ESP-07- The programme only works when the board is connected via a converter to USB.

I fired up this project for myself: ESP8266 DHT11/DHT22 Temperature and Humidity Web Server with Arduino IDE .
The ES-07 board is powered by a power supply module for contact boards. It communicates with the computer via a converter to FTDI. From the converter I connected only the transmission signals and ground.
Everything works nicely when the converter is connected to the computer. It works even when I turn off the computer. But it doesn't work when I run the chip with computer switched off.
Could the problem be insufficient current capacity of the power supply module and ESP-07 additionally feeds itself parasitically through the TX/RX lines of the USB/UART converter? This is the only thing I can think of. I've even already eliminated serial transmission from the program to rule out a possible problem when the ESP-07 sends data to a non-existent device.

sq9etc wrote:

The ES-07 board is powered from the power supply module for the contact boards.

.
How specifically is it powered i.e. how are the power lines routed in this case?

Perhaps this will direct you:
.

The module is connected as in this diagram:
Link .

I additionally added a second power and ground wire each, but this did nothing. Only unplugging the converter from the contact board helped. Apparently it messes up when not powered.
I consider the problem solved, but the topic is not yet closed.