Hi all! I have soldered all components but when I measure the DC between 5V and GND (C and D in the manual) it is not 5V. Depending on the position of the voltage regulator the DC-span is between 0,85 V and 4,3 V. Do you have any idea what I have done wrong? I did the Connection at the 5 V solder pads and the scratching. Best Regards, Paul