MAISONNEUVE Michel

I've upgrade firmware to v2021.03.01 and it's the same. I think it may come from a bad reference for the ADC 

 Hello, I think there is a difference in the components. Where can I find the test points ​​and measured values ?

Thanks for the answer, I checked between BANK2F3M9 (74) and SGPIO2 (62) and I have the R89 resistor of 39 Ohms.