Well I am trying make a diode test with my digital multimeter. When I measure with the multimeter probe (video link) , 0.401 volts seen in one direction, If I change the location of the probes, it's increasing to 1.332 volts in the other. In the 2nd video (2. video link), when I take the diode out of the circuit, my measurements seem normal. a constant volt of around 0.553 appears in one direction and OL in the other direction. I wonder why the diode test on the circuit is not working properly. Which structure connected parallel to the diode prevents me from taking a healthy measurement.