Hi,
I used the KeyrahV3 for several weeks, powering it through an external USB port. I decided to purchase a pin header for soldering. I performed the soldering, started the Pi, and everything worked correctly: the LED lit up, and the keyboard worked.
After a few minutes of gameplay, everything stopped working. I opened the case and noticed that the soldering had come off, so I proceeded to redo it. However, the Keyrah has stopped working: now the LED is blinking, and the keyboard no longer works.
Did I f.... the board? What does it mean that the LED is blinking?