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Please check whether the P0 has waveform.
Test the continuity of the relay. The attenuation of oscilloscope probe is set to × 1. When the channel voltage is less than or equal to 200mV, the yellow color relay pin in the figure is on. When the channel voltage is greater than or equal to 500mv, the blue color relay pin in the figure is on. You can compare and test two channels.
The 6 points I mentioned in the second reply have no waveform. Does the oscilloscope show straight line? Or no straight line?
If you need a new board, please contact your seller to deal with.
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