This problem I can solve.
But now there is a new problem:
Immediately when starting / gooting appears the temperature symbol (full red) on the touch display.
In the internet I have read, this indicates a to high voltage. Is this correct?
My technical configuration:
RPI with an own power supply (Mean Well rs-25-5) with an output 5.1 Volt (measured)
Justboom Amp Hat with an own power supply (Mean Well rs-75-25) with an output 17,6 Volt (measured)
RPI & Justboom connection: ribbon cable 2 X 20 pins
Do I have a mistake in the technical configuration?