Help identify Tesla gen3 charger DC voltage divider circuit

[m.art.y]

Hi,

So I have been using 17 kw 3 phase Tesla gen3 charger for over a year and I'm very happy with it. However it has one drawback that it's modules shut down once they reach 420v. I however noticed that in my charger one of the modules is reporting ~4 volts lower DC voltage than the other two and that module keeps charging full power after the other 2 modules had shut down. I therefore think this voltage difference is due to variance in resistor values in DC voltage sense voltage divider circuit. If I could identify this voltage divider circuit I'm hoping that by changing resistor values I could get Tesla charger to charge a few volts higher. I need this because I am running 108s system and currently am only able to charge to ~3.88 v per cell. I include photos of the Tesla gen3 board.

[bigmotherwhale]

you should look up the IC's datasheets until you find something like a DC Voltage Isolation Sensor it will likely be connected to a long string of resistors, I can see several likely candidates on that board.