[Solved] Why does the chip not respond when power is applied again?

Hello, I made my own PCB on which I placed the ESP32 and when (I know it sounds strange) I run the soldering iron over the pins and connect the power supply it works and when I disconnect the power supply and connect it again there is no response. Please help

As you touch you can leave a charge on the pin corresponding to the required pull-up to VCC (or vice versa, take it away). Clearly something is missing on this custom PCB.

kaczakat wrote:

As you touch this you can leave a charge on the pin corresponding to the required pull-up to VCC (or vice versa, take it away). Clearly something is missing on this custom PCB.

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And do you perhaps know what pin needs to be connected to VCC or GND at startup?
P.S. I know there is something with pins 0 and 2 but I don't quite understand what.

It depends on how you want to run it, but I can see now more what you mean. Type "esp32 minimal circuit" into Google and you'll find wiring diagrams, pins are connected differently for programming, differently for normal operation, and some pins have common settings - e.g. RST and EN (here there is only 1 pin, in ESP8266 there were separate ones) always 10k to VCC, GPIO0 pin to GND or to VCC via 10k. Some modules, because it is not a bare chip after all, have selected resistors connected and this can be verified with a multimeter. There is also a ready-made "ESP32 PLATE ADAPTER" and on it there are prepared places for two resistors to be pulled up to VCC and two buttons, one to do RST the other to possibly activate programming mode. This is what your own "minimum" board should look like.

Man you are a god. Thank you very much.
The internet is full of descriptions of how to do this just all so convoluted. Thank you very much again.

Added after 42 [seconds]: .

3.3V through a 10k resistor to IO 0.