WROOM 03 after soldering doesnt resopnd

[KanyeKanye]

After developing a board and soldering, esp doesnt respond: "A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header".
How can I detect if the chip works, have power, is enabled in spi mode? Is it programmed with some at commands at the beginning?

[kolban]

We'd probably need to see your circuit schematic as well as the command you were attempting to run.