Hi, Alex Thank you for replying fast. I was testing and all J2 pins are short circuited, +5Va, +5VD and GND too. If I'm not wrong, is this meaning that U5 or/and C1 are bad, could it mean that other components are bad too? " If POWER SUPPLY IN and POWER SUPPLY GND are short circuited, your board may very well be damaged. " Do you have any idea where could be the problem? " Probe the power pins (AVDD,DVDD) to see if power is correctly reaching the part. " From MMB0 board or ADS1299 board ? I can't figure out how can I power supply the ads1299 without the mother board MMB0. There is a way to use ads1299eeg whitout MMB0? When you said CAP1, CAP2 and CAP3, do you mean C1, C2 and C3 on schematic? And, finally, do you think I gonna need to buy another kit use? Regards, Matheus Alexandre
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