I have a resistor 1MOhm soldered in a PCB that looks like that And the schematic is looking like that: When I measure the resistance by touching the a multimeter on the two ends of the resistor the measured value is around 500KOhm. When the resistor is not soldered the value is the correct one 1MOhm measured by the same multimeter in the same way. Why is that and what is the resistance value seen from the resistor "input"?
If we make the equivalent circuit of the measurement it looks like that, doens't it?: