I followed this guide (Low Power), step 2 in particular, and cut the traces to and from the power LED. First, I have cut the trace between LED and resistor (see pictures attached). I measured the current and it was above 500 µA while sleeping. Because the guide reports 54 μA consumption, I also cut the trace between LED and capacitor. Current consumption went down to 24µA.
Surprisingly, and unfortunately, I cannot program my Pro Mini anymore and the status LED does not flicker when power is applied, which it should AFAIR. Using my DMM I could not find any suspicious shorts or whatsoever. For example, there is no unexpected voltage drop.
Maybe someone has an idea, what to look for to find the cause of the problem.
Should I try and unsolder the LED, capacitor and/or resistor?
Thanx & best!