Creality Ender CR10 S Pro don't start - short blue led

Hello,
We just startet. The Printer was unused. After leveling and so on we made one nearly perfekt Print.

We needed to make a new leveling of the left front corner. So we startet the auto leveling and the printer hung. After a long time we turned off the power and restarted after a minute.

Poorly it didn’t start. A short noise and and short blink of blue led.

Do anyone know the issue or solution?

Thanks.

You could look at the breakout board if a trace/track has burned through because of shortcircuiting. If so buy a new breakout board (abt 20 dollar/euro, make sure you get the right one for your version of the cr10spro).
You can check the traces by a multimeter on the ohm setting

If it is not the breakout board then it could be something blow up on your mainboard but in most cases the mainboard is the first that’s broken.